The Leader: Fallenpaw naturally falls into the role of the leader of the apprentices.
Action Girl: Most certainly, yes. She is more likely than not the best fighter in the group.
The Big Guy: She is arguably the most skilled in combat, by far the most violent, and generally the most dangerous member of the group.
Bratty Half-Pint: Technically, though she is the oldest cat in the group. She is described has having the immaturity of a kit and often reacts violently to insults.
Dark and Troubled Past: Implied. She has not been very forthcoming with her past, but she has mentioned that she was bullied for her size and implies that her parents are either dead or are not a part of her life.
Ain't Too Proud to Beg: After he throws Flarepaw, who hates water, into a spring, he begs and grovels to try to convince her not to kill him.
Chivalrous Pervert: Though not particularly chivalrous or perverted, Wildpaw nonetheless is seen as a giant flirt by everyone around him, and he does live up to this reputation, though he does show kindness and respect to his fellows and will help them when they are in need.
Deadpan Snarker: Shows signs of this from time to time, as part of his jokester personality.
Uses this against Flarepaw after her wet dream, from repeatedly calling her a kit for her extensive pouting afterwards to twisting language to trick her into opening up.
Hidden Depths: Demonstrates concern that he is viewed simply as the flirt of the group.
Identity Amnesia: After being caught in the flood, he loses his memory and thinks himself to be a cat named Alpha. He gets better.
The Lancer: Arguably serves as this to Fallenpaw, though he does not see himself as this.
The Medic: He serves this role in the group, having been a medicine cat apprentice prior to the flood. As a result, he treats the various wounds and injuries suffered by the group over the course of the story.
The Pollyanna: She is perpetually cheerful, despite all of the woes she's suffered as a result of this journey. This begins to show signs of cracking towards the end.
Genki Girl: Arguably this, as she is excited about nearly everything.
The Pollyanna: Still remains cheerful and happy, despite everything that has happened since the flood. It seems to be wearing off as time goes on.
Nice Girl: Debatable, but it can't be denied that Mistle took in those in need and continues to take care of them while they can't take care of themselves. Still, going as far to kidnap Anemonepaw for the sake of providing medicine to the group may have gone too far.
Always Identical Twins: Though she is not twins with Flarepaw, they are still almost identical in appearance, with enough similarity that she was confused for Flarepaw at first glance by Flarepaw's own friends.
Back from the Dead: Blackshadow dies when she falls off a cliff rescuing Flarepaw, but is revived by a mysterious entity on the condition that she cannot ever interact with her sister again.
Big Brother Instinct: Though not the brother of Flarepaw, Blackshadow is still very protective of her and continues to watch over her, even after the latter thinks she is dead. Blackshadow grows extremely angry at first when the remaining five travelers tell her that they simply allowed Flarepaw to go her own way.
Deal with the Devil: After dying, she accepts a deal from a mysterious entity to continue living and watching over Flarepaw, though she will be unable to interact with her sister in any form.
The Ghost: For much of the story, she fails to make any appearance, despite being repeatedly mentioned in reference to Flarepaw's backstory. She finally makes her first appearance in Chapter 13, where her backstory is finally revealed.
Parental Abandonment: On the giving side of this trope rather than the receiving side; after her death and resurrection, Blackshadow runs away from Flarepaw, though this is more of the fault of her Deal with the Devil than personal choice.
Parental Substitute: Implied to be this to Flarepaw, considering how the latter called for her at the beginning of the journey. Blackshadow is eventually revealed to have served as this to Flarepaw and her brother Smoke since the death of their mother.
Promotionto Parent: Being the oldest family member after the death of her mother, Blackshadow is forced to take this role up until her death and resurrection.
The Reveal: Blackshadow is not dead, as Flarepaw believed, though she was forced to be separate from her sister forever.
The fact that Blackshadow is Flarepaw's sister in the first place also qualifies as this.