Flash Thompson appears in the Ultimate Spider -Man cartoon series, voiced by Matt Lanter (as Flash Thompson / Agent Supporting character of : Spider-Man. Eugene " Flash " Thompson is a supporting character in Marvel Comics's Spider - Man series. The character was created by Stan Lee and Steve Ditko in. Eugene " Flash " Thompson is a high school jock and former bully at Midtown High School, and a fan of Spider -Man. He later is temporary known as the Scarlet. Spider-Man Mary Jane Watson Harry Osborn J. Venom is later shown to have been somehow separated from Flash and it finds a new host in Lee Price. Advertise Media Kit Contact. After he was attacked, Spider-Man explained to him that Rhino is Alex. Content is available under CC-BY-SA.