Wario is a recurring antagonist in the Mario series and a the main anti-hero in the games starring him.
Wario is seen as a baby in Yoshi's Island DS. As a child, Baby Wario is prone to tantrums, and already has a penchant for riches. He is kidnapped along with all the other children of the Mushroom Kingdom by Kamek, and after some adventures with Yoshi and a group of Bandits, Wario is last seen arguing with Baby Bowser on a barge filled with treasure. Wario is very powerful; his weight and strength are often emphasized in the games he appears in, especially his own. He owns a number of vehicles, including two cars, a tractor, a plane, and a bike. He tends to name some of said vehicles after animals. Wario is very greedy, even with riches, he strives for more, which leads him to do some evil. Otherwise, he generally leaves people alone.