Diesel

Diesel is a white tom with black zig-zagging stripes

Warrior's Return
Diesel is a kittypet whose Twolegs run Mac's Truckstop, known as The Place of Big Monsters to the cats. When Graystripe is hit by a monster, he helps Millie nurse him back the health. Graystripe think that he likes Millie, and felts like her has to compette with him for Millie's love. He also thinks riding a monster to the Sun-Drown-Place, and helps them find the right one.