A Shaydas (ジェイダス, Jaydus) is an enemy in Super Smash Bros. Brawl's Subspace Emissary mode, first appearing in the Lake Shore level. They are large amalgamations of Shadow Bugs with 2 heads and long, two-ended blades on either arm. While Shaydas are barely scratched by most attacks, its center, a red sphere, functions as a weak point - attacks deal double damage to it under most scenarios. Shaydas levitate as well.
Shaydas have three main methods of attacking: a slow, powerful, blade cross, a double slash, and a triple slash. The latter is only used at low health levels.
An odd enemy with two heads. Its legs might suggest that it's a beast of some sort, but in actuality, a Shaydas is formed by swarms of Shadow Bugs. Maybe that's why recklessly attacking it will do no good--you must strike its pink core to defeat it. Just watch out for the giant blades that it brings to the party. Mind the blades, and pick your attacks wisely!