Conversation so far:
What is Phineas and Ferb?
Phineas and Ferb is an American animated musical comedy television series produced by Walt Disney Television Animation.
When did Dan Povenmire work on the show Phineas and Ferb?
August 17, 2007 - June 12, 2015
Was Dan Povenmire the creator of the show Phineas and Ferb?
Yes

Question: What was his position in the show?
Self-contained rewrite: What was Dan Povenmire's position in the show Phineas and Ferb?