Punk-Punks are a type of creature that appear in several JumpStart games.
Appearance

Sketches of various Punk-Punks from the JumpStart Blog
Punk-Punks are small, round furry creatures. They have large eyes and small feet. Their mouths are typically not visible when closed.
There appear to be two main types of Punk-Punks: the land-dwelling Punk-Punks and water-dwelling Punk-Punks. The water-dwelling Punk-Punks have fish-like fins and live underwater.
Punk-Punks can come in many different colors.
Personality
Punk-Punks are described as pesky troublemakers.
In the Games
JumpStart (online game)
Punk-Punks appear as enemies in several places, such as AdventureLand and MarineLand.
JumpStart Deep Sea Escape
Water-dwelling Punk-Punks appear in this game as obstacles.
JumpStart Escape from Adventure Island
Land-dwelling and water-dwelling Punk-Punks appear in this game as obstacles.
JumpStart Crazy Karts
Punk-Punks appear on the obstacles.
JumpStart Punk-Punk Blitz
This is a puzzle game where players have to quickly match up Punk-Punks.