Becky

also known as Bear
she has curly hair that reaches a bit down her shoulders, brown eyes, light skin and is a human.

Becky is observant and keen of intellect, discovering Big Man's past as a Last Man. Unlike her rival Tiger, she is not ruthless and realizes it's a mistake to execute Big Man, despite the consequences. She is strong-minded and determined, yet lacks Big Man's experience, bickering with him until Gus insists they stop fighting.

Abilities
Peak human physical condition: Becky is in peak human condition, as she was able to chase a train and jump onto it while moving.
Leadership: Becky is a capable leader, having led the animal army from the start, to the time she left to join Gus and Thomas.

When Becky was young, she was adopted into a family that had a hybrid daughter (Wendy). One day, because her parents were protecting a hybrid kid, they were killed by Last Men with Wendy being taken away. Ever since then, Becky was on her own until she met a girl called Tiger and other orphaned kids. Becky became the founder of the Animal Army: A group that rebelled against the Last Men and fought for the rights of all hybrids unlike others who blamed hybrids for creating the virus and want to exterminate them. One day, Becky (With the name Bear) and a rescue party that consisted of Tiger, Rhino and Pony, saved Gus from the Last Men as he and Jepp were being escorted somewhere. Because of his former affiliation with the Last Men, Jepp was ordered to die by Becky but once Gus pleads Becky to keep him alive, out of curiosity she considers it for the time being. Taking them back to their base, Becky gets to know Gus a little bit more and reveals Jepp's "true" identity of who he was. Even so, Gus forgives Big Man and asks that he isn't killed, with Becky making a promise that that won't happen without her permission.

Abbot: the man that leads/commands the Last Men. Sadistic, narcissistic, hypocrite and a liar.

Gus/Sweet Tooth: the first hybrid, deer hybrid, blonde, shy, sensitive, smart and determinated.

Jeppherd/Jepp/Big Man: guy with black skin, determinated to protect Gus, all injured, was one of the last men, serious.

Wendy: Becky's new sister, pig hybrid, smart, has black skin and curly hair.