Thought of how many times I drew Zen in different artstyles, and since a redesign for her is all but fully drawn, here's all of the times I drew Zen (at least without massive alterations to her design.)
Read more for the styles.
Styles as far as I can remember:
Rhythm Tengoku (Specifically the Rap Men minigame)
Little Red Rocket Ship
Cave Story
SMB1
Zelda II: Adventure of Link
SMB2
Startropics
Earthbound
Danganronpa
Bun & Gun (when the game was in 2D.)
Personal 1-bit style.
Legacy of Goku 3 (portrait)
Stardew Valley
NES Mega Man
Stardew Valley
Legacy of Goku 3 (sprite)
Neo Geo Pocket Fighting Games
PS2 Disgaea
I Wanna Be The Guy