Perfecto “Perf” de Castro is a Filipino musician currently based in Los Angeles, California. Best known for having been a celebrated fixture in the Philippine alternative rock scene during the 1990s, Perfecto was one of the original members of the alternative rock band Rivermaya, founded the band Triaxis, and also collaborated with the seminal Filipino rapper Francis Magalona and Filipino hard rock band Wolfgang, all of whom received critical and commercial acclaim.