Editing Mickey Mouse universe (section)

=== The Mad Doctor ===
{{Main|The Mad Doctor (1933 film)}}
'''The Mad Doctor''' (also known as '''Dr. XXX''') is a human [[mad scientist]] who serves as an infrequent antagonist of Mickey's. He first appeared in [[The Mad Doctor (1933 film)|his self-titled short]], in which he attempted to operate on Pluto by attaching his body to that of a chicken; this entire sequence turned out to be a dream.

The Mad Doctor makes a cameo appearance in the [[Roger Rabbit]] short ''[[Tummy Trouble]]'', where a photo of him can be seen on the hospital wall.<ref>{{Cite news |title=Every Hidden Reference in Roger Rabbit's "Tummy Trouble" |language=en-US |work=Laser Time |url=http://www.lasertimepodcast.com/2018/06/22/every-hidden-reference-in-roger-rabbits-tummy-trouble/ |archive-url=https://web.archive.org/web/20190602040558/http://www.lasertimepodcast.com/2018/06/22/every-hidden-reference-in-roger-rabbits-tummy-trouble/ |access-date=2023-03-05|archive-date=June 2, 2019 }}</ref>

He appears as an antagonist in some video games, being a boss enemy in ''[[Mickey Mania]]'', a major antagonist in ''[[Epic Mickey]]'' and its sequel ''[[Epic Mickey 2]]'', and an enemy in a mini-game of ''[[Kingdom Hearts III]]''.