Dr. Eugene L. Butterman is a recurring character in El Tigre: The Adventures of Manny Rivera.
Boring, emotionless, and dull.
He first appeared in a DVD documentary on Zebra Donkey, which caused Manny and Frida to fall asleep. later appeared in the local ice cream parlor, where he heard Manny shout "CURSE YOU, DR. EUGENE L. BUTTERMAN!", then told a clerk "I'll take that to go".
He appeared in a documentary of Underground Empire.
No Boots, No Belt No Brero
As their family therapist, he obtained custody of the Rivera Family's objects of power, until they started to behave like a family; he later gave them back after he was attacked by one of the supervillains on the rampage.