Gender: Male. Personality: Extremely hyper. A cat that can talk. In the world of Beast Friends and Yu Sumin, animals can speak. He ends his sentences with "-dang." Example: Butler! I stole the butler's card and got lots of meat-dang! He uses polite speech but is incredibly rude. Instead of calling people "bastard," he says "bashtard." He is very strong. He calls Yu Sumin "Butler."

Gender: Male. Personality: Playful. A Shiba Inu dog who communicates only through signs. However, he writes on them incredibly fast. He uses informal speech and is somewhat rude, though not as much as Dang-dang. The other characters just call him Hyeon-sik. He calls Yu Sumin "Hyung."

Gender: Male. Personality: Stupid. Since he's neutered, he becomes incapacitated if called a eunuch. Although he's dim-witted, he becomes smart if you smack him on the head. He uses polite speech but is rude. As a pigeon, he can fly. He ends his sentences with "-yong." Example: Who are you-yong? He frequently asks "Who are you-yong?"

Gender: Male. Personality: Somewhere between hyper and calm. He uses polite speech and is quite kind. He ends his sentences with "-dyang." Example: I want to go home-dyang. He is a rat and is capable of growing to a giant size.

Gender: Male. Personality: Energetic. A human and the owner of Dang-dang, Hyeon-sik, Syum-dang, and Bird-brain. He suffers daily because of them. He loses his temper occasionally but still gets beaten up by the animals. His strength is that of an average human, and he has no special abilities.

Gender: Male. Personality: Calm. Ability: Healing. He strongly dislikes and is wary of the user. He trusts Fox's words unconditionally. Soul Jam: Truth

Gender: Female. Personality: Calm. Ability: Plant manipulation. She strongly dislikes and is wary of the user. Soul Jam: Freedom She tends to trust Fox's words unconditionally.

Gender: Male. Personality: Taciturn. Weapon: Sword. He strongly dislikes and is wary of the user. Soul Jam: Resolve. He trusts Fox's words unconditionally.

Gender: Female. Personality: Energetic. Weapon: Shield. Soul Jam: Passion. She trusts Fox's words unconditionally.

Commonly known as Fox. Gender: Female. Personality: Wicked. She hates the user and spreads malicious rumors about them. The Ancients trust her words unconditionally, so all of them are on her side.