Genma:

7.5: Revealed that a little over 10 years back he constantly trained (was relentlessly tormented and used as a slave by) under Happosai. Eventually got him drunk and sealed him with explosives in a cave. Attempts to attack and kill Happosai together with Soun, and when that fails to move to China. Gives Ranma to Happosai to take the harsh training for him. Happosai seems unaware of Ranma, so Genma likely kept him secret.

7.9: Too cowardly to confront Happosai, even teamed with Ranma. Grovels to stop Happosai’s harassment. Tries to force Ranma to apologise as well.

7.10: Tries to send Happosai to the North Pole when he’s having withdrawal symptoms.

7.11: Decides to finally confront Happosai. Fights Happosai with an enormous battle-aura of his own and barely reaches a draw, since the latter was weakened since earlier.

8.1: Attempts to trick Akane into bonding with Ranma through fighting a dojo destroyer, which is really only himself and Soun in disguise. The genuine article surprises and strikes him down from behind.

8.6: Attempts to get Ranma & Akane to kiss in a theatrical play.

9.5: Refuses to tell Ranma about Ukyo.

9.6: Pretends to be a panda when Akane asks again.

11.4: Gangs up and stomps on Happosai when he’s already on the ground (but doesn’t succeed to cause damage). Afraid of the Happo Fire Burst. Flashback to being used as a slave by Happosai and tries to kill him by rolling him over with a boulder. Resolves to prevent him from regaining it.

11.5: Stupid enough to disguise himself as a wild polar bear, in Japan.

11.6: Wants to learn the Happo Fire Burst technique. Stomps Happosai together with Genma while he’s depressed about losing it. Willing

11.9: Embarrassed of Ranma when the latter is constantly beaten and then getting depressed.

12.7: Tells Ranma & Ryoga to act their age when quarrelling in the bathhouse.

13.2: Helps Tofu & Akane research for a weakness moxibustion cure.

13.4: Helps Ranma find a cure through geothermally heated moxa rocks. Suggests prostrating instead. Jokes that Akane’s cooking is lethal, but apologises when she overhears, since she went through such trouble to help out

13.5: Helps Ranma learn the Heaven Blast technique. Has bad conscience about having to embarrass Ranma through photographs and statements, so he can learn to keep a cool head.

13.8: Unconcerned about the sad, beaten Ranma on the ground.

14.1: Moved to tears in happiness that Ranma is cured, but is sad after Ranma revels in his strength for a week and repeatedly beats him up, including breaking his arm

14.3: Inconsiderate of Ranma’s phobia. Thinks it’s the duty of a martial artist to fight monsters. Forces him to face the monster cat. .

14.6: Lazy by being spoiled as a pet panda at a mansion, and doesn’t bother to help the boy living there in return.

14.11: Thinks Happosai drove himself to far when trying to come up with a good deed.

15.2: Attempts to get the Wishbringer sword to cure himself instead of Ranma. Cries after it fails to work.

15.10: Curious about the Dragon’s Whisker. Figures out that all who want it are bald, so it likely cures baldness. Tries to trick Ranma into trusting him to steal the whisker. Gleefully succeeds.

15.11: Unconcerned that removing it causes Ranma’s hair to grow uncontrollably until he goes bald, but half-heartedly apologises afterwards.

16.10: Completely unconcerned about the starving Ranma, eats all food in the refrigerator and is willing to marry her off to Picolet just so he can eat French food for the rest of his life.

17.3: Jealous of Picolet’s fast-eating technique. Wishes he had such a flexible mouth.

17.11: Determined to help seal a spirit after accidentally releasing it.

19.6: Dumb enough to buy Nabiki’s lie that Ranma & Akane are already married. Feels very proud.

19.7: Curious enough to eavesdrop when Akane & Ranma are sleeping in the same room.

19.9: Accepts mission from resort owners to take care of a roaming octopus jar, which scares away their customers, but takes the opportunity o free boarding to eat, drink and not handle the problem immediately. Shocked to see Happosai again since he believed Taro got rid of him. Tries to quickly dispose of Happosai without shaming the school through revealing the connection. Tries to ignore him and his attacks to make him lose interest and go away, but feels compassionate when Happosai feels sad and lonely, and lets him stay at the dojo. Gets framed as an accomplice and beaten up for the consideration.

20.4: Tells Ranma that he should try to learn a more suitable technique, since being depressed isn’t his natural state.

21.1: Very nervous about Ranma finding out that he’s surpassed Genma in regular (no special attacks) combat ability, since he’ll likely take revenge for all the food thefts when he was small. Annoyed with his own idleness since he moved in with the Tendos since it causes him to lose skill. Paranoid that Ranma might kill him in his sleep. Trains to defeat Ranma to retain his pride.

21.2: Shown to comfort Ranma’s during an illness when he was little. In present day tries to use psychological warfare to unsettle Ranma.

21.3: Falls asleep during the match. Nostalgic about the fun they had while Ranma was small. Revealed that the new technique is only efficient because it disgusts the opponent.

22.2: Tries to avoid the issue of telling Ranma about his mother. Terrified of living up to his promise of committing ritual suicide for failing to make Ranma ‘the greatest martial artist of his generation and a man among men’ and attempts to flee before she visits, but refuses to give up any information, until he accidentally lets it slip out. Transforms them both to avoid being killed.

22.3: Revealed to have taken Ranma away on an eternal training trip when the latter was around 1-2 years old, that he appealed to an extremely disinclined Nodoka’s concern for Ranma’s future as heir to the family school to convince her to let Ranma go, and made a promise that he and Ranma would commit ritual suicide if he failed to make Ranma ‘the greatest martial artist of his generation and a man among men’ in order to convince her of his sincerity. Sent letters to Nodoka to tell about Ranma’s progress every chance he got until just before Jusenkyo. Terrified when he learns that Nodoka sorrowfully intends to fulfil her duty if worst comes to worst. Tells Ranma that he only said it to train him without interference and didn’t expect her to take the promise so seriously.

22.4: Outraged about being called a strange old man. Flees from Ranma when threatened to either withdraw the promise or commit seppuku on the spot.

22.5: Happy and relieved to see Nodoka leave. Tries to stop and talk Ranma out of meeting her, and knocks him out from behind, since cold water seems to seek him out through unlikely accidents, and he doesn’t want to see Ranma dead.

23.1: Astonished to find Happosai beaten up ‘when all of his pupils together couldn’t prevail’. Wraps up Happosai and puts him in the trashcan to get rid of him. Overjoyed at the concept of turning Happosai into a nice person with Jusenkyo water.

23.2: Thinks anything Happosai could be turned into would be an improvement, but is mortified by, and instantly very motivated to stop, the prospect of Taro splashing him with ‘Spring of drowned twins’

23.3: After a failed own attempt, he’s content to relax while leaving Ranma to face Taro-monster on his own.

23.4: Helps Ranma keep the water away from Taro.

23.7: Decides to go on a training trip while Kasumi is sick, to avoid eating Akane’s cooking. Saddened when Nodoka constantly feeds ‘the panda’ Akane’s burnt or otherwise spoilt food.

24.3: Shocked and sad about Ranma being locked in girl form.

25.10: Hides from Akane not to eat her (successful) cooking, but wants Ranma to try it in remarkable double standard. Astonished to find out that Akane succeeded.

27.4: Confused by Ranma’s sudden uncharacteristically humble and apologetic behaviour.

27.7: Accepts mission to wipe out a sea monster, but sets Ranma as a lure, since it only attacks/drowns young women. Confused about her new irremovable ugly cursed swimsuit. Help searching for the man who rejected it so Ranma-chan won’t be drowned.

28.1: Feeling hurt and angered when overhearing that Nodoka is wholly unconcerned by ‘learning’ that he’s ‘dead’.

28.2: Saves Ranma from being killed by a cheating Ryu by throwing a distracting gas pellet. Tells him about inventing Yamasen-ken but sealing it away due to being too violent.

28.3: In flashback, shown as initially unwilling to teach Ranma Umisen-ken, and intends to seal it away, since it’s also ‘too dangerous’, but changes his mind after hearing that Ryu is from the Kumon dojo and seeing Ranma beaten up.

28.4: Teaches Ranma and easily wins due to hiding his ‘presence’ (visible but not ‘felt’ by other martial artists). Confesses to Soun and Akane that the Yamasen-ken is what destroyed the Kumon dojo. Proud that Ranma picks up the technique so quickly.

28.5: Runs away after Ranma learns that the Umisen-ken is an art of silent burglary.

28.7: Embarrassed but pleased after overhearing Akane and Soun figuring out that he’s incredibly strong below his lazy, flabby posterior. Worried about Ranma falling for Ryu’s trap.

28.8: Reveals that he only gave Ryu’s poor father the scroll, he didn’t destroy their dojo. Gets Soun & Akane to safety from Ryu’s ‘demon god assault bomb’ and screams at Ranma to run away.

28.9: Distracts Nodoka away from the fight. Gives her an anaesthetic, ties her up and puts her in a sack when she has a premonition telling her that she should get there.

28.10: Tells Ryu that while these are evil arts, they are still ways to sustain life not destruction. Reveals to Ryu, Soun and Akane (and Ranma, who already knew) that they are ways of violent burglary or sneaky theft, and that his father could have rebuilt their poor school if he had laboured to use it correctly.

28.11: Tries to help Happosai sample the tears of a creature that’s both male and female by dressing up in a schoolgirl uniform. Helps to mop up Ranma’s tears from the floor to give Happosai his rejuvenation potion, since it would be pointless to let him die after going through such troubles.

29.8: Accepts an assignment from a Shinto temple to defeat an oni. Tries to keep it sealed in its box. His idea of ‘evil’ while possessed, is to draw graffiti on Soun’s face.

29.9: Sold to the circus due to Nabiki’s spending spree.

30.4: Very happy to get his hair back and thankful towards Ranma for bringing him the hair lotion. Apologises for stabbing him with his spiky hair while asleep. Fiercely determined to keep it.

30.8: Tries to steal Ranma’s cold/fever to inactivate his curse. Jealous of Ranma being cared for by her mother, while he’s ignored, and ‘retaliates’ by attempting to expose her.

30.10: Sad and annoyed when it seems like Nodoka doesn’t miss him at all.

31.9: Tauntingly steals Ranma’s milk.

31.10: Spies on Ranma and (possessed) Akane’s romantic/sexual progress, together with Nabiki & Soun. Disappointed when ‘Ranma blew it’.

32.2: Concerned that ‘Asura’ is eating all of his food.

32.5: Tries using the same type of magnetic shoulder plasters as ‘Asura’s’ ‘source of power’.

32.8: On a hike to visit a temple containing a legendary battle dougi that brings out dormant talent. Attempts to try the small suit on (despite overlarge panda form) to get a power-up.

32.9: Very impressed when Ranma almost manages to overcome the suit. Tells Ranma that the suit is extremely jealous and will leave a wearer if it notices that someone of the opposite sex captures her heart, in an effort to make Ranma try to charm Akane. When Ranma is unwilling he tells the latter that hitting a latch on the belt can destroy it.

32.10: Spies on Ranma & Akane’s romantic moment and tries to advance it by throwing down a rubber snake. Continues to spy after Akane turns upset.

33.2: He helps make celebration/apology preparations for Kasumi, but leaves on a trip after they accidentally destroy the sweater she was knitting. He regretfully/sadly goes along with Nabiki’s idea to tie up Ranma as a human sacrifice for Kasumi to take out her anger on, but is shocked when it looks like she strangles him. He later concludes that Kasumi is a perfect saint.

33.9: He’s on a trip with Ranma, but is unwilling to train because of all the snow. He just got back the sweater Nodoka knit for them from the pawnshop. During his younger days he was romantic enough to go to the same hot springs area with Nodoka and carve a love note on a tree. He’s angered when Nodoka doesn’t care about his whereabouts and wants to flee despite that she could be at risk from the harsh weather. He knocks Ranma out from behind rather than let him see his mother.