Zodiac from Mewgenics game. This is the first boss of the second act with a cool "don't move" mechanic, or hide behind cover, otherwise he will shoot.

Main trigger:

zodiacmew, cowboy hat, furry male, black fur, scar across eye, red eyes

Options:

uneven eyes, hat over one eye, half-closed eyes, animal ears, tail, cat tail, black cat, :<, grin, evil smile, teeth, sharp teeth, missing tooth, whiskers, claws

Clothes:

tabard, capelet, poncho, cape, pants

Weapon:

holding handgun, revolver, smoking gun, finger on trigger

May help:

black skin, big head, chibi only, 1boy, black cat, furry