Robolun is a robotic Bubble Dragon with a silver body. He has two large yellow eyes and red feet. Unlike most normal Bubble Dragons, Robolun does not posses spines of any kind, but is still able to pop bubbles despite this.
Much like most normal Bubble Dragons, Robolun is able to shoot bubbles, despite not having a mouth, which he can use to trap enemies inside. Also like other Bubble Dragons, he is also able to jump on top of bubbles in order to reach normally inaccessible areas. Robolun is able to move much faster than the other playable characters, but cannot jump as high.
Robolun appears in Bubble Bobble Revolution as an unlockable playable character. He is unlocked by beating the game once, and is able to move noticeably faster than the other characters. The player must clear the game with him in order to unlock Lovelun.