The rest of the Cast

The Victorious Cast
[Credit to Wikipedia]

Andre Harris (Leon Thomas III)
is Tori's best friend and is an amazingly gifted musician and singer/songwriter. Andre loves to perform and takes his craft very seriously. He is the guy Tori and their other friends come to for anything and he is always willing to listen to and help with their problems.

Robbie Shapiro (Matt Bennett)
is a shy and awkward nerdy student at Hollywood Arts. Robbie is a master ventriloquist and often uses this skill to express his true emotions. He is almost always seen with his dummy Rex, who likes to insult Robbie. Robbie treats Rex like an actual person and gets offended when people call Rex a dummy or puppet, saying its an "offensive term".

Jade West (Elizabeth Gillies)
is Beck's popular girlfriend. Jade happens to be very negative towards many people. She hates and likes unusual things. Although Tori and Jade got off on the wrong foot, they seem to be forming a friendship and Jade has even come to Tori on numerous occasions for help. Jade is very overprotective of Beck and gets easily jealous whenever she sees Beck with another girl.

Cat Valentine (Ariana Grande)
is very sensitive, eccentric and flirtatious. She has crazy instant mood swings depending on what the people around her say or do. She is quite random and can be in her own world at times. Cat often brings up odd things that have no part in conversations. Actress Ariana Grande describes her as fun-loving, free spirited and absolutely adorable.

Beck Oliver (Avan Jogia)
is Jade's boyfriend. He is shown as handsome, easygoing, funny, and down-to-earth. Beck is the opposite to his girlfriend, considering that Jade is negative and Beck seems to always being positive, but they love each other regardless.

Trina Vega (Daniella Monet)
is Tori's older sister. Trina has big hopes and dreams of being a star. She seems to not have any sort of talent whatsoever, although she believes she does. Trina is shown to be likable, but she is a diva and believes everything is about her. When Trina has a chance to be a star, she takes it, even if it doesn't belong to her.