Emilio (in Japanese エミリオ, sometimes エミリヲ) is officially the band's general manager. He's an E.M.I.G.L.I.O (Electronic Mechanical Industrial Generated for Logical Infiltration and Observation) remote-control robot toy designed in Italy.
These toys were distributed in Japan by SEGA under the name "DJ Emilio". It's a shame that Anago didn't keep the DJ part in his name... but I get why.
He's remote-controlled but to tell you the truth I don't know much about him in terms of what the band did with him on stage. I'm looking to buy a toy of my own, but they're stupid expensive to import to Australia.