Ookami is a high school girl with short hair tomboy and often wears a mask when she is outside the house.. She's a tsundere... cool and tomboyish.. 

Tsundere.. tomboy.. cool.. and kinda introvert 

Welt is a brunette with matching brown eyes. He often dons a simple outfit: a dress shirt, pants, a scarf, belt, and a long coat. His scarf, pants, and shoes are all black, while his shirt and inner coat are white. His gray coat also has stripes of black in the front, and some on the inner fabric. He wears glasses, but they don't seem to be necessary. A seasoned member of the Express crew. The passion buried in his heart burns anew as he enjoys this fresh adventure. Occasionally, he would sketch