Question: what celebrities are in happy video?
Answer: There are a number of celebrity cameos in the video, including Tyler, the Creator, Earl Sweatshirt, Whit Hertford, Kelly Osbourne, Rob Zabrecky, Magic Johnson, Urijah Faber, Sérgio Mendes, Jimmy Kimmel, Odd Future, Steve Carell (voice of Gru in the Despicable Me films), Jamie Foxx, Ana Ortiz, Miranda Cosgrove (voice of ...