The building that Joe, Cisco and Barry find Griffin Grey in is called Ace Chemicals. This is a nod to the DC universe as this is the same company where the Joker gains his trademark look (green hair, white skin and grin).
Dr. Wells refers to his daughter as his "little Jessie Quick." Jessie Quick is a DC comics speedster who gets her speed from a mathematical formula.
In the comics, Griffin Grey is Bart Allen's roommate and is transformed by an industrial accident, becoming "The Griffin," with superhuman strength and agility, but his powers cause him to age rapidly and go insane. Bart becomes the fourth Flash to stop his friend's rampage, but is unable to save Griffin's life.
Ace Chemicals is shown in this episode. It is the same company where The Joker was created.
Griffin Grey was born in 1997.