According to our sister site Variety, which first broke the story, the actor will appear in multiple episodes playing a character by the name of Kyle Diaz. Details on who Kyle is and how he figures into the Grey’s universe is unknown at this time.
Valderrama is coming off a full-time stint on Fox’s short-lived drama Minority Report. His other TV credits include Raising Hope, Suburgatory, Royal Pains and From Dusk Till Dawn.
Grey’s was recently renewed for a 13th season.