Tick Tock Jr. is a character appearing only in the Japanese puzzle game Kirby Super Star Stacker. He is a minor character and is associated only with the game's Time Trial mode.
Tick Tock Jr. is the representative of the Time Trial mode of play. When the player selects Time Trial, Kirby is faced with a seemingly-endless puzzle of blocks. The gameplay is identical to the regular game mode puzzles, however, it is ongoing and the match only ends after three minutes pass. After which Kirby's score is tabulated.
Throughout the match, Tick Tock Jr. serves as the opponent. He routinely adds in rows of new puzzle blocks as the match goes on.
Tick Tock Jr. is a small blue alarm clock. As his name implies, he appears to be a miniature version of Mr. Tick Tock. His facial features imply he is laid back in personality, but he appears quite competitive when Kirby squares off against him.
Notably, his color pattern is an inverted version of Mr. Tick Tock's coloration in Kirby: Nightmare in Dream Land and Kirby Super Star Ultra, with a blue exterior and pinkish-red shoes as opposed to Mr. Tick Tock's pinkish-red exterior and blue shoes. The colors of their faces are identical.
- Tick Tock Jr. has similar lackadaisical facial expressions to that of Nova, another clockwork being that debuted two years earlier in Kirby Super Star. Nova was hinted at being a creation of Halcandran ancients.