He had a stint in the World Wrestling Federation (WWF) as "Phantasio." His gimmick was that of a magician wrestler. He wore a black and white mime mask (which he handed to a kid sitting at ringside) that revealed matching facepaint when removed. He made his WWF debut on the July 16, 1995 episode of Wrestling Challenge. He portrayed a babyface and came out to no entrance music. It turned out to be his only televised appearance. He defeated Tony DeVito by sneaking up from behind and magically pulling out his boxers allowing him to roll up DeVito for the victory. After the match he magically removed the boxers (black and white colored) of referee Earl Hebner. After that he was never seen again in the WWE. However, before he left the company he ended up wrestling one house show against Rad Radford in a victorious effort.
Harry Del Rios competed on Total Nonstop Action Wrestling's first-ever broadcast on June 19, 2002. He wrestled as Del Rios, but was not used by TNA after the initial broadcast.
Rios made a comeback to wrestling full-time which is something he hasn't done since 1995. He would wrestle under the name Shock and team up with fellow wrestler Awe ("British Storm" Ian Harrison). The team would wrestle primarily in Memphis Wrestling.
In the January 2007 issue of WWE Magazine, there is a short interview with Harry Del Rios concerning the Phantasio character. Del Rios claims that the idea originated as a combination of the Ultimate Warrior and Legion of Doom gimmicks. He also hinted at a possible return of the Phantasio persona.