Think you’ve read everything Gaiman’s written? How ’bout this Gaiman-penned Ninja Hero Turtle* strip for Comic Relief from 1991?
The Teenage Mutant Ninja Hero Turtles*, as written by Neil Gaiman:
Not convinced? Read here for details.
* From Wikipedia:
Upon TMNT’s first arrival in the United Kingdom, Ireland, Sweden, Norway, Finland, Poland, Austria and Germany, the name was changed to “Teenage Mutant Hero Turtles” (or TMHT, for short), since local censorship policies deemed the word ninja to have excessively violent connotations for a children’s program.
(Get it, before the high-res images expire!)