The Protagonist[]
In the garage
The main character and the cat that the player takes control of, they start as a young kitten dreaming of becoming a master in C.A.T.S. tournament. While he/she is watching the tournament, Uncle Tony appears and gives them their first machine, a 1-star wooden Sneaky.
Every player can customize and name their cat.
NPC[]
Uncle Tony[]
During the tutorial
In the garage
Player's presumed uncle that helps them become a master in C.A.T.S. tournament, he serves as the main support for our protagonist and sometimes as a main character in events. Tapping him in the main menu will bring up bets.
Steevy[]
Uncle Tony's friend and master mechanic, Steevy guides the player in fusing parts, and provides them Steevy Boxes when provided with Monkey Wrenches. Steevy Boxes are special item boxes that allow the player to pick 1/2 items of their choice. There are 3 levels of Steevy Boxes, costing 50, 100, and 200 monkey wrenches respectively, each one providing more items, with the final one allowing you to see the stats of each item. Steevy Boxes run on the same 24-hour interval as the main championship, as upon buying all 3, you will have to wait for the boxes to replenish.
Snake[]
Secondary antagonist that appears during the tutorial. Snake and his gang are attempting to get back the Sneaky that Uncle Tony presumably stole from them. Uncle Tony guides the player in defeating him. He is never seen or mentioned again.
Snake returned during one of halloween All-Stars where he "left a few traps for the player", but he was ultimately defeated once again.
Mr. Macavity[]
A crime boss taking interest in the C.A.T.S. championship. He originally planned to send Snake and his gang into the championship, though after defeating him, he decides to send the player instead. He is never seen or mentioned again.
Ace Jack[]
A friend of Tony that introduces the player to bets. He is never seen or mentioned again.