- This article refers to the character whose English name is Nervin, for the character whose Japanese name is Nerve, see: Blitz.
Nervin, known as Blitz in the Japanese version and Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator and as Boyiston in Yu-Gi-Oh! 5D's Tag Force 4, is a friend of Yusei Fudo. His Japanese name comes from the German word for lightning. He along with Tank and Blitz hang out in Yusei's underground base. In the dub, he is called "Nervin" while Nerve is called "Blitz". He has a habit of worrying too much.
He along with Tank and Blitz are provoked into a fight by Lenny and his gang. When Yusei returns to Satellite, he helps carry Yusei's battered and broken Duel Runner to Martha's house, catching a cold in the process. After watching Yusei win the Fortune Cup via a TV in a junkyard, he would later disappear when the strange black cloud surrounds Satellite. Rally told Yusei that when everyone disappeared, he was sacrificed to an Earthbound Immortals. After Yusei and Roman's second Duel ends, he, together with most, (if not all) people from Satellite sacrificed to the Earthbound Immortal is resurrected.
In episode 150, he's cheering on Yusei.