Cats Hate Water: Lucy became hydrophobic after Mike almost drowned when they were younger. Oh, and she also almost drowned trying to save him, since she didn't know how to swim; Paulo had to rescue the both of them. That most likely contributed to the phobia...
Loners Are Freaks: She was forced to play alone in pre-school. Because she didn't want dolls, but cars, and was a girl. Girls decided she was too boyish. Boys were afraid of her.
Tsundere: "Why would I be best friends with such a jerkface?"
Slap-Slap-Kiss is her style. Interestingly, as she continues to grow up, she moves closer to becoming a Kiss-Kiss-Slap tsundere.
Adaptation Dye Job: Began in the author's sketches as a yellow cat, before becoming grey.
Berserker Tears: Follow the sequence and notice that, while Lucy was hurt worse, he cried more.
Beware the Nice Ones: Mike can be a nice guy, but when something pushes him to a point, like Lucy's abuse over the years and his friends taking her side during "Unrequited", he can lash out at times.
He's been overreacting lately and Lucy is all-but broken at this point.
Butt Monkey: Originally a lot. Not so much recently.
Can't Hold His Liquor: It takes very little alcohol to make Mike hilariously drunk. Which ends up directly leading to Alejandro attempting to mug the group in Confrontation. Oh God...
Super Senses: Michael has excellent hearing, to the point that sudden yelling and pep rallies really mess him up. Ace hearing indeed. The trap in Confrontation took advantage of this to get the group in an alley for mugging.
Took a Level in Jerkass: Lucy is considerably nicer to him and others than she used to be. He's, on the other hand, become less friendly to her since her Love Confession.
Gave Up Too Soon: Inverted with her crush on Mike. She waited so long for him that she didn't even notice Abbey liked her.
Generic Cuteness: While still seen as pretty (Augustus has called her 'gorgeous' and Carter at one point even mistook her for Lucy) Daisy is regarded as being much less attractive than most of the other Main girls. However Daisy is part Ragamuffin, which develop later than most cat breeds, so her lack of attention probably stems from her poor self-confidence and the fact she isn't as developed as the other females.
Love Triangle: AbbeyxDaisyxAugustus. In canon, Abbey got her. In a What If? chapter, Augustus did.
Nice Girl Daisy despite being very occasionally immature or jealous, is very kind-hearted and supportive of her friends, often going to huge lengths to help them out.
In the chapter "Return", it's revealed that Paulo now thinks of Daisy as more of a sister anyway, and doesn't mind her going out with another guy.
However, it is hinted at in "Back and Forth" that he still doesn't want to be seen as a sexual deviant in her eyes, as he immediately notices her and seems worried about her opinion of him when Tess and Lucy start some drama because of his sleeping around and being a man-whore in general.
Catch Phrase: Paulo's abuse of the word "AWESOME" and common usage of kid, wimp, wuss, etc. when referring to Mike.
Chivalrous Pervert: When the well-being of Daisy or Lucy is in danger, Paulo tends to forget his perversion in favor of helping them or, at least, trying to. He also reacted this way when Sue got hurt in Confrontation.
Also, he absolutely refuses to make use of Lucy's fragile state when she almost imposes herself on him.
An eternally chipper, dimwitted chocolate Labrador Retriever and Paulo’s best friend, David could generally be considered as the comic relief of the story, but he sometimes makes very astute observations.
AmbiguouslyBi: David adores Abbey according to the chart. And this◊ or this makes it seem that David likes touching Abbey while having fun.
Now according to the new chart, he also adores Augustus.
A chivalrous new member of the group, Abbey’s struggle with his troubledpast sometimes shows in his behavior. He is kind and helpful to others, but if this Abyssinian’s moral code is broken, he can lash out.
Shadow Archetype: His "Disaster Dominoes" version. Abbey hates abuse, that Abbey was abusive. Abbey loves Daisy, that Abbey constantly tried to beat what he didn't like out of her. Abbey gets therapy, that one clearly didn't.
Secondary characters
Susan "Sue"
Always hanging around behind the scenes, this European Burmese’s interest in the dramatic doesn’t always extend to the conflicts between Mike, Lucy, Paulo, et al. Bright and easygoing, Sue would much rather be acting, directing, or taking photos, honestly.
Put on a Bus: During freshman year. She later got a supporting cast role in sophomore year.
Sandy
The Sunny Funny to Mike’s Parappa, Sandy is the enigmatic light on the horizon that ensures Mike’s frustrating unavailablity. After moving away and starting a long-distance relationship, she has had some success as a model.
A year older than the main characters, Jessica is an approachable member of the cheerleading team that, while kindhearted, is never afraid to offer an opinion on things important to her. She does not get along with Tess.
Berserk Button: Jessica hates it when called out about how she bullies Tess, which led to Lucy's button being pressed... Tess pretty much just takes the bullying.
Bottle Fairy: Has been seen drunk in "Back and Forth".
Break the Cutie: Jessica got this from a lot of the school and Tess as a freshman.
Characterization Marches On: Jessica and Rachel were initially your typical high school bullies with little reason for singling out Tess aside from her being an easy target. As time went on, though, hints were gradually dropped that there was a deeper reason as to why they bullied Tess specifically, a reason that was fully revealed in "Pillow Talk".
Rachel "Rache"
Jessica’s closest friend, Rachel is soft-spoken and cheerful. Like Jessica, she holds a grudge against Tess for reasons nobody wants to talk about.
Characterization Marches On: Jessica and Rachel were initially your typical high school bullies with little reason for singling out Tess aside from her being an easy target. As time went on, though, hints were gradually dropped that there was a deeper reason as to why they bullied Tess specifically, a reason that was fully revealed in "Pillow Talk".
Jasmine "Jazz" "Jazzie"
A peppy young girl in freshman year, Jasmine immediately took a liking to Paulo and has taken the role of both his girlfriend and partner-in-crime.
Beta Couple: She and Paulo were considered this at first, but "Pillow Talk" later subverted this. ** And yet it's been unsubverted at the end of "Carry Me".
Augustus is calm, composed, and has biting wit. A lot of people end up hating him because of it, but he doesn’t seem to mind, as long as his purposes are served.
Attempted Rape: Final Fantasy Cat looked like he was about to do this to Daisy, but Abbey intervened, though it turns out he wouldn't have gone through with it.
Lucy’s first pet. Yashy is something of a prodigy, although her intelligence is put to questionable use (like insulting others). She is bratty, loudmouthed, and harsh, but remains well-beloved.
Childish and innocent, Chirpy is attached to Yashy as she believes her to be her mother. Always in awe of the world around her, she follows others but always tries to do the right thing. She tends to give everyone simplistic nicknames.
Another pet, Lily is a voice of wisdom for her owner Lucy and others that come to her for advice. She is understanding and patient and is usually able to steer people in the right direction. Basically, a plot device.
Mike’s pet, he was rescued from a fire when young and suffers from amnesia (hence the name!) He is best friends with Yashy and they are constantly playing together, arguing, or annoying Mike and Lucy.
Meaningful Name: "You're as quick as a blur and your memory sucks!"
No Name Given: Due to amnesia, we never learn anything as to who he was before that fateful thunderstorm.
Fancharacters
Tessa "Tess" Canning
Half Ragdoll and half Bengal, Tess is a filthy rich rebel. She met the group as they entered high school, and has hung around them ever since. Tess drinks a bit and likes to help others, but she’ll have to move on pretty soon.
Alec “McCain” McCain is one of those background characters that remains detached and logical in any situation, even if it doesn’t earn him any points with the others. He is most often seen being told to shut up by those who don’t value his blunt pronouncements.
Local popcorn merchant Amaya is a surprisingly quiet Tabby, at least most of the time. In fact, she is essentially a mute, choosing not to speak out of some weird plot continuity decision on the part of the author. Her job at the cinema is sometimes useful to those who know her.
Cute Mute: Gives off this impression due to her insanely shy nature. She's actually The Silent Bob.
A precocious Golden Retriever, Katie spends her time worrying about how to look and what to wear, and is rewarded by her position as probably the most popular girl at school. She’s not necessarily mean and cruel in her actions, she just doesn’t think too much about others.
This mysterious girl is absent from just about everything besides David’s fantasies. While she remains unaware, she has completely captured David’s affections, and he spends a lot of his time clumsily stalking her.
Molly seems to have an endless reserve of childish positivity, despite suffering the same setbacks as her older brother Abbey. She is a dedicated member of the local girl scouts troop, and loves her brother dearly.
A hapless kid dragged into various misadventures by other members of the cast, Justin is generally seen looking for cover and wishing he could just go back home.
Some keen-eyed forum users suggest he was the one who date-raped Tess when she was a freshman.
Combat Sadomasochist: Alejandro took two of Lucy's kicks, had his teeth smashed into each other hard enough to chip one and draw blood, and was still okay enough to beat Lucy senseless before Mike came back, smashing his face into an alley floor and still not stopping him. It took Mike and Lucy together to turn the fight around (at which point it became a No-Holds-Barred Beatdown). And he beat Mike (and was about to crush his skull) before all this happened.
Sue: So um... why are you picking on us? We're like... thirteen, ya know. If you think we're loaded with cash, then you're kind of an idiot. Alejandro: *fingers Sue's chin* So then what's the harm in givin' us all yer money? Sue: *slaps Alejandro's hand away* Because we actually NEED it! Alejandro: *punches Sue in the face* WHO THE HELL CARES ABOUT YOU?!?
Would Hit a Girl: And hits two on-panel. It's implied that he hit his old girlfriend.