Myumelzee is a Hyper-Zoanoid that has only appeared in the 2005 Guyver: The Bioboosted Armor TV series and in one of the more obscure manga novels. In the anime, he is partnered with fellow Hyper-Zoanoid Noskov and the pair are ordered by Richard Guyot to attack Sho Fukamachi. Both Noskov and Myumelzee possessed sonic emitters that they used in tandem to generate a soundless bubble around the Guyver, preventing him from hearing anything and leaving him vulnerable to sneak attacks. However, Sho would escape the null-sound when he discovered the Guyver's Sonic Buster weapon, which he used to disintegrate Myumelzee.