Phineas and Ferb - Season 1 Episode 40 : The Monster of Phineas-n-Ferbenstein 2015
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The boys learn about one of Ferb's Victorian ancestors, who helped a scientist create a monster. Meanwhile, Doofenshmirtz recalls the story of his great-great-grandfather Dr. Jekyll Doofenshmirtz.
Released: Jan 01, 1970
Runtime: 00:12:14 minutes
Genre: Animation, Comedy, Family, Sci-Fi & Fantasy
Stars: Vincent Martella, Thomas Brodie-Sangster, Ashley Tisdale, Dan Povenmire, Dee Bradley Baker, Alyson Stoner, Bobby Gaylor, Maulik Pancholy, Caroline Rhea, Richard O'Brien, Kelly Hu