Meemos

When a virus affected the land base of G.U.A.R.D, samples of the nano-aliens Algyuros and Apatee escaped and morphed into a cross breed of Apatee and Algyuros, Meemos who then morphed into a fake Ultraman Gaia to ruin the ultras reputation.

Imatation Gaia
A virus by the name of Ghost attacks Geo Base and nearly threatened XIG had it not been for Georgie. The virus quickly went to the base of GUARD and infected the systems that were holding the remains of Apatee and Algyuros. Teams Lightning and Crow were sent and they witnessed the disaster turning into Ultraman Gaia based on data that was stored there. Gamu turned into Gaia to prove it was an imposter. After a couple hand slashes the duo starred each other down and used their Photon Edges on each other with the real Gaia dominating the attack. XIG then opened fire at the scarred monster as it morphed into it's true form of Meemos.

Meemos
After his plans of imitation Ultraman Gaia failed the cross breed of Apatee and Algyuros revealed his true form of Meemos. The two clashed with a fast and furious battle, but after Gaia used the Liquidator and failed Meemos used his homing boomerangs and forks to beat down pin Gaia to the ground. Once XIG distracted Meemos with an assault Gaia turned into Ultraman Gaia Supreme and turned the mutant kaiju dust with the Photon Stream.