From WiKirby, your independent source of Kirby knowledge.
Bo is an enemy from Kirby 64: The Crystal Shards. It is first encountered in Stage 3 of Rock Star. It does not yield a Copy Ability if swallowed. Bo is a black orb of smoke with white eyes. It moves about slowly through the air, and will harm Kirby if he makes contact with it. Bo appears to move randomly in short bursts, but does seem to seek Kirby at least somewhat, eventually coming into contact with him if he holds still for a long time. Bo can typically be found in small groups, appearing like a swarm of bugs, though not acting in unison.
Bo can be found in the following levels and stages: