Which alien merges with Geo Stelar in Mega Man Star Force?

Geo Stelar merges with the alien Omega-Xis in Mega Man Star Force.

Geo is an 11-year-old boy grieving the presumed death of his father, Kelvin Stelar, after a space-station accident. His life changes when he uses a Visualizer and encounters Omega-Xis, an extraterrestrial being hiding from the FM King.

Omega-Xis takes refuge in Geo’s Transer and performs an Electromagnetic Wave Change with him. Their fusion transforms Geo into the Star Force version of Mega Man, allowing him to move through the electromagnetic-wave world and fight hostile FM beings.

Omega-Xis is sometimes confused with other Mega Man partners because the franchise has many transformation systems. Bass.EXE belongs to MegaMan Battle Network, while Duo is associated with the classic Mega Man series. Lumina is not Geo’s merging partner in the original Star Force game.