Barbar is a big brown eel with beady black eyes with a large jaw. They also have three darker spots (possibly gills) and visible fins. In Kirby's Return to Dream Land, both large and giant sizes exist. In later games, only giant ones appear. Barbar looks considerably slimier in the 3DS games than it does in Kirby's Return to Dream Land.
These enormous eels stay inside dens and tight corridors most of the time. If Kirby or one of his teammates goes near one, it will try to eat him. If he does get eaten, he will start taking damage. Shaking the Wii Remote rapidly (or mashing the +Control Pad) will free him. Prizes such as food and Energy Spheres are often found nearby to lure Kirby into a Barbar's trap.
Larger, black Barbars called Iron Barbars appear in Dangerous Dinner, where they live in lava instead of water. Since Kirby can't actually swim in lava, Iron Barbars lunge out of the lava and into the air.
Barbar's attack has changed; rather than immediately lunging at Kirby when he approaches, Barbar will slowly wriggle toward him. Some Barbars come out at the hero from the background. A land variety of Barbar known as Land Barbars are introduced in Endless Explosions and can be inhaled with Hypernova Kirby.
Barbar uses the same attack pattern, but no Barbars attack from the background. It is a rare enemy, only appearing in one room in Stage 7 of Access Ark.