Diesel

Diesel is a member of the Big Mom Pirates.

Appearance
Diesel is a tall man with rather thin legs and a tiny mustache. His most prominent feature is his giant hat resembling a chimney which blows smoke, as well as wheels on both sides of his body which appear to have no real functionality other than him spinning them when he runs. He wears a dark suit with a giant light bowtie, dark pants, and a dark mask over his eyes.

Personality
Diesel is very loyal to Big Mom, as he massacred several people to get flour for her, and immediately went to report Brûlée's defeat to her. He is very confident in his running ability to the point of bragging about it, and has a quirk where he acts like a steam train as he runs.

Abilities and Powers
Diesel claims that he is a very fast runner, although the fast mink Carrot managed to easily catch up to him.. He is a capable warrior, as he was able to massacre several people to gain flour.

Totto Land Arc
Three days before the wedding between Vinsmoke Sanji and Charlotte Pudding, Big Mom sent Diesel to an unknown island to acquire flour for the wedding. Diesel attacked a flour factory and massacred the factory workers as he successfully acquired flour.

Diesel was later with Charlotte Brûlée and some of the other Big Mom Pirates and citizens of Totto Land in Mirro-World as they prepared to cook Carrot into stew. Diesel advocated closing the lid as soon as she was dropped into the pot in order to prevent a struggle. However, the real Carrot was actually up in the attic, and as she threw a rock at Randolph, Diesel spotted her. Carrot and Tony Tony Chopper managed to ambush the party and knock almost everyone out, causing Diesel to race out of the house to report the incident to Big Mom. However, Carrot caught up to Diesel and put her hands over his eyes, causing him to crash.

Trivia

 * Diesel is named after the diesel locomotive. Ironically, however, his chimney hat makes him more resemble a steam locomotive.
 * Diesel's quirk of acting like a train is similar to the filler character Aveyron.