Baby Bowser

Baby Bowser is the baby version of Bowser. He appears in Yoshi's Island and Yoshi's Story as the main villian. However in games like Mario & Luigi Partners in Time he is just a mid-boss. In Yoshi's Island DS he is actually a character to play as.

“Ahh...nothing quite like good cookies and some evil milk.” —Baby Bowser, Mario & Luigi: Partners in Time.