| Look out!
"He might strike at anytime, even in a way you may not see coming!"
Unless you want to know when he'll strike next, you may want to be cautious as you read this page.
Phelan Flynn was the biological father of Candace and Phineas. He was murdered by Heinz Doofenshmirtz some years ago. His ghost appeared to Phineas and Ferb in visions in The Bitterness of Candace Flynn and to Candace in The Bitterness of Ferb Fletcher.