Bivolt's first and only appearance is in Kirby 64: The Crystal Shards. It hides in wires, ropes, and other climbable surfaces coming out to chase Kirby when he tries to climb them. He is completely invincible.
Electric creatures that live on metal chains and posts, as well as wires, Bivolts shock you off of whatever you're climbing. Just give a quick test climb to anything that may be hiding a Bivolt to see if one appears before you climb to the top.”