Kelvin Stelar

Kelvin Stelar (Hoshikawa Daigo in the Japanese version) is a character from the MegaMan Star Force series. His role is like that of Yuichiro Hikari's. He is an stronaut who went missing a few years before the first game. He was captured by the FM-ians while trying to form a BrotherBand with them. But Omega-Xis turned him and his crew into EM waves so that they can survive in space but are lost.

He makes an appearance when Geo is fighting Andromeda. He encourages Geo to fight on because everyone counted on him. Later Kelvin appears in a dream, telling Geo to trust in his friends. In the Deep Space Comp, Geo also finds Kelvin's Transer, along with the Kaiser Knuckle weapon, and a message to Geo, explaining his fate.

Finally, in MegaMan Star Force 3, he is found to be inside Meteor G (as he had been converted to EM waves by Omega-Xis). Hope Stelar gives Geo the "Kelvin Code" (Daigo Code) which plays a vital part in the final stage of the game as it helps locate Kelvin's memories throughout the Meteor Server. At the end of the stage, Geo finds Kelvin standing in front of the core, only for him to be sucked in when the Crimson Dragon is summoned. After the defeat of the Crimson Dragon, Geo eventually drifts his way back to Earth, and after the credits he reunties with Omega-Xis and Kelvin, who turns out to be alive and well.

Shooting Star Rockman
He appears after the final battle with Andromeda when Geo asks Cepheus to show him his dad. Kelvin says that he's safe in space, exploring other planets and might not be back for a long time.