Rusty Walrus

Rusty Walrus (ウォーラス Warasu in Japanese) is a genetically enhanced walrus who appears only in Crash Twinsanity. He works for Doctor N. Gin as his Battleship's cook.
Not much is known about Rusty. What is known is that he is a chef under the employ of Dr. N. Gin (as depicted from his apron). After defeating the latter, Rusty appears from another room, sees Crash and says, "Ah yummy, fresh meat for my pot!". The chase that ensues is much like the traditional boulder dash levels of previous games. Obstacles include holes in the floor (which strangely Rusty walks over some of them), Nitro Crates (which Rusty is surprisingly immune to) and burning-hot steam. It is unknown what became of him after N. Gin accidentally set off the major TNT explosion, but since he was immune to the nitro crates, he was probably immune to the TNT's explosion. Actually, on the High Sea High Jinks level gallery Crash is shown falling through a hole in the floor and landing in Rusty's pot. He does not feature as a character in any other games in the Crash series.
Rusty Walrus' name is an homage of the famous NASCAR driver Rusty Wallace. This is fitting, considering he was originally planned to be in Crash Team Racing. He would have appeared in Twinsanity's cancelled sequel in a cooking show, where he would have chased Crash again.
Rusty was going to be a boss instead, but was cut.