When Earth signed the Citadel Conventions accord in the year 2165 and gained membership to the broader galactic community, one of its most popular exports to the rest of the galaxy took the form of entertainment media: primarily its music, movies, and television shows.

Taking inspiration from an old Earth cartoon and the resemblance its characters bear to their own species, four krogan younglings grew up playing rough-and-tumble games while styling themselves as the four Teenage Mutant Ninja Turtles, each wearing the color of his favorite turtle. Clan Splinter was born, and this krantt formed deep bonds of brotherhood while learning to fight together as a team.

Now, 21 years later, a Reaper named Shredder has landed on Tuchanka, threatening their homeworld and potential genophage cure. Our four heroes-in-a-half-shell grab whatever weapons were close by and rise up to fight the corruption in their land, still in formation as the Krogan Ninja Turtles, and ready to take down any Reaper foot soldiers that stand in the way of their destiny.

Credit for the idea of Krogan Ninja Turtles goes to the fanfiction "Living an Indoctrinated Dream - Book 1: Fugue", by Aberron