* His first appearance was in the Barney and the Backyard gang video "Waiting for santa" (1990).
* His first appearance in the TV series was "My family's just right for me" (1992)
* His last appearance was in the episode "On the Move" (1995) when he came back with Tina to visit Barney and
talk about going to a new school.
* He is on the T-ball team
* He has a pet goldfish named Angel
* He is interested in space
(For more Derek pics go here