|“||There are ghost-like enemies popping out of portholes above each platform throwing fireballs at you in time with Kirby's jumps.”|
|— Kirby 64: The Crystal Shards Official Strategy guide (BradyGames)|
Noo is a transparent, white ghost-like enemy with spherical hands and a smiling face.
Noo only appears in Stage 2 of Rock Star in a dark room with the platforms that make an "X." It waits for Kirby to approach a black hole that it hides in. Once he comes close enough, Noo will toss blue-purple fireballs at him. Noos can be harmed, but it just counts as a stun, so therefore Noo can never be defeated.
- In Kirby: Right Back at Ya!, in the episode Escar-Gone, there is a character named Erasem that bears a slight resemblance to a Noo.
- The Prima strategy guide for Kirby 64: The Crystal Shards makes two errors relating to Noo. The first states that Noos live in Stage 2 of Shiver Star and fly out of the clouds at Kirby. What they are actually describing are Mopoos. The guide later states that Noos throw ice chunks at Kirby when what they actually throw are fireballs.
|“||Inhabitants of the clouds of Shiver Star, groups of Noos fly out of the clouds above Kirby with little warning. They're particularly damaging when they fly out while Kirby's trying to fly nearby.”|
|— Description • Kirby 64: The Crystal Shards Official Strategy Guide (Prima)|