Glunder is a static producing enemy that hides in a robotic shell in Super Smash Bros. Brawl. When you get near them they send out electricity which can damage your character. They are members of the Subspace Army.
These enemies move by rolling around a surface, regarding of gravity. When attacking, these guys extend their robotic shells and send out a blast of electricity. They obey the laws of gravity when they get knocked off, but will go hugging the terrain again when they recover.
In Smash Run, their attributes change in that in comparison to their counterparts, they are bigger and faster and have no element weakness, but deal less damage.
Super Smash Bros. Brawl
An enemy that separates into three parts, then blasts enemies with a high-tension current it produces within its body. When it's ready to attack, it will make a "Bzzt!" sound and produce a lightning flash. When this happens, approach with caution. This enemy type is color coded--Glires are red, Glices are blue, and Glunders are yellow. It's a family of destruction!
Wii: Super Smash Bros. Brawl
Super Smash Bros. for 3DS
This rotating enemy will follow the terrain. The yellow one is called Glunder. Whenever a fighter gets too close, it'll release a blast of lightning. One hit isn't too bad, but taking several will really leave you hurting. Best to try to take this from a safe distance.