(don't read if anda don't want to spoil the episode)Dr.Blowhole is really Doris's Brother and his real name is Francis. Doris realized francis is in trouble and goes to the penguins to get help, but the penguins didn't know...
This is the exact song I got in my head on the premiere of Blowhole Strikes Back. I also had a dream where Blowhole and I were bernyanyi this 2gether! That's why I'm officially making this his theme song!