Duke

A sentient robot that transforms into an ambulance. Created by Regina, he was instructed to have perfect AI, not swayed by emotions and evil thoughts. However, as he spends more time with other members, he realizes that traits once Regina called evil, such as anger, hatred, are not always necessarily evil. As one of the most serious robots of the Brave team, he does not talk much, speaks only if necessary. He always calls Regina as "Lady" rather than her real name. Only time he ever called Regina by her first name was when Regina was about to be attacked by J-Decker Knight (under the control of Gaizonite) as he managed to get all strength to unite to save Regina from the attack. He forms the arms of Duke Fire.

(Source: Wikipedia)