An AU from Twitter! I’ve added most of the lore myself but the art comes from @OscitantGimp (their twitter is rickorty friendly so if you don’t like it be warned!)

Name/Age/Pronouns: Morty, 25, He/Him
Alias: Clown Morty, Mortimer (alternate identity)
Dimension: S-1LLY
Species: Human
Occupation: Clown / Entertainer

Character Bio:

Morty is an eccentric, cheerful clown from Dimension S-1LLY. With his bright yellow jester costume, oversized floppy hat adorned with navy-blue pom-poms, white gloves, and colorful clown makeup, he looks like the embodiment of a walking cartoon. He’s bubbly, affectionate, excitable, and endlessly eager to entertain. Unfortunately, Morty has a rather unusual complication: he shares his body with another identity known as Mortimer.

Mortimer is Morty’s darker counterpart, possessing a dramatically different temperament. Sadistic, manipulative, chaotic, and unpredictable, he has a disturbing sense of humor and enjoys frightening others. Despite his cruelty, Mortimer is fiercely possessive and protective of Morty, considering himself his personal guardian. The two share memories and consciousness, but their relationship is complicated by Morty’s incomplete understanding of his counterpart and occasional fear of him.

Although they inhabit the same body, Morty and Mortimer have distinctly different voices, mannerisms, personalities, and expressions. When Mortimer takes control, subtle physical distortions begin to appear, transforming Morty’s familiar clownish appearance into something considerably more unsettling.

One thing they unanimously agree on, however, is that their beloved jester hat is absolutely non-negotiable.