Name: Mike

Age: 29 in dog years

Breed: Mastiff

Parents: Unknown

Siblings:Unknown

Pups: Unknown

Mate/Crush: Been through a few relationships that ended badly

Personality: An upbeat canine, never letting his bad luck with relationships get him down. The phrase that keeps him going is "dark today, bright tomorrow, just keep walking until sun shines on you."

Likes: His friends, being with people and canines, keeping his form up, and close companions.

Dislikes: Being alone, being pushed around, being made fun of.

History:
  Mike is a hound who has had a decent life when it came to the streets of New York. Even though he was abandoned as a pup and can hardly remember his parents or siblings, he survived by keeping his head up and his bad feelings down. He lives his life as he sees fit, avoiding as much confrontation as he can. Due to dogs constantly picking on him for being by himself, he became tougher when needed, working his body to be powerful.
  He soon met up with Dodger's crew of canines who defended him from a group of bad dogs, including Roscoe and DeSoto, and became great friends with them. He went his own way after staying with them a few days, hoping to train himself to be a better fighter, despite himself being a lover of peace, so he could be worth something to Dodger's crew.
  Soon after Sykes and his Dobermans were taken out, though after Grimm had joined the gang, Mike returned to the crew, where he was welcomed with enthusiasm. He got along with Grimm and Einstein, though he was mainly best friends with the energetic Tito, always humoring each other by 'working out', acting as each other's spotters with boxes for the Mastiff and sticks for Tito.
  People often tell him that his eyes are like a clouded sunset, and they are always sparkling with optimism. Though despite his happy attitude and optimistic stride, he can't help feeling depressed when he can't find a relationship and being made fun of by old enemies, even though they don't attack him due to his strength. Though his buddy Tito is always there to cheer him up and poke fun at those dogs.

Related to Oliver and Company:
He was attacked and made fun of by Roscoe and DeSoto before their elimination by Dodger's crew. He is also a returning member of Fagin's gang, and best friends with Tito, as well as buddies with the others.

(Credit to Moki for the Mastiff lineart for the headshot, Saske for the artwork for his detail)