"Is french fries an idea?" -Brain to Igor.
Brain (voiced by Sean Hayes) is one of Igor's inventions and a member of Jaden's Adventure team. He is a dim-witted human brain transplanted into a life support jar. He may be an idiot, but he is all heart. He first meet Jaden in Jaden meets Igor, who helps him free the Kingdom of Malaria from a long-lasting storm. He, along with Scamper, decide to join Jaden and his friends after that.
- Brain and Scamper will debut in Jaden goes to Madagascar.
- Brain will meet Jeffrey and his friends in Jeffrey & Friends meet Igor.
- Blaze the cat considers Brain to be a nuisance due to the fact that he isn't smart, but she does respect him.
- Brain is the only one uneffective too Kaa's Hypnotism unlike his teammates.