|First appearance||Anokoro Keroro Gunso|
|Species / Type||Keronian|
Madodo is a character in Anokoro Keroro Gunso.
Madodo is the mad scientist and the creator of the Robobos.
Madodo is a dark yellow green Keronian wearing a white lab coat. His appearance is covered in mechanical parts such as a sphere glass on his head with an antenna inside it, black horns for ears with a red wire on the right, and a blue one on the left. He has square-shaped eyes, his pupil is purple on the left, while his right eye is cybernetic.
Madodo comes from the word, mad, (mado) for mad scientist.