David Grellier is a French electronica musician and founder of the musical projects College (2005) and Valerie (2007). Under the stage name Mitch Silver, he is also a member of the electroclash band Sexy Sushi, active since 2004.

"A Real Hero" is a song by French electronica artist College in collaboration with Electric Youth, released in 2010. The song was included as the eleventh track on Electric Youth's debut studio album Innerworld. The track was used as a main theme in the 2011 film Drive, directed by Nicolas Winding Refn and starring Ryan Gosling and Carey Mulligan.