Yu's first film was the 2003 comedy The Utopian Society. He later made an uncredited appearance in the 2005 film Elizabethtown, starring Orlando Bloom and Kirsten Dunst. The following year, Yu had a supporting role in the comedy 'Grandma's Boy'. Yu also had a supporting role in the 2008 Academy Award-winning biographical political drama Milk.
Kelvin currently writes for Bob's Burgers, and for his work he was nominated twice for an Emmy award along - for Outstanding Animated program - with the rest of the writing team. In 2016, he also won an Annie Award for Outstanding Achievement in Writing in an Animated TV/Broadcast Production (along with co-writer Steven Davis) for the episode "The Hauntening."
