Very little is known about how Diesel, a Woolly Mammoth came to be about in the modern world. Some say he was found frozen in ice in northern Russia, defrosted and then kicked out of the Lab for running up a HUGE food bill.

Today he's just your typically Fat guy. He loves nothing but stuffing his face with as much food possible and as often as possible. He gets hungry very quickly and you don't want to be near by when this Mammoth has a hunger pang.
Even though he's very tall and big, he was still able to find an a Hawaiian shirt that almost fits. He usually quite grumpy and don't say he's fat as all Mammoths are puffy, it's all the hair.

Credit goes to C-Trigger for this picture of Diesel