Joshua

Joshua is a dog who is the father of brothers Jake, Finn, and Jermaine. As confirmed by Natasha Allegri, he and his wife; Margaret adopted Finn as a baby. He first appeared with his wife in one of Finn's flashbacks in the episode "Memories of Boom Boom Mountain." They find Finn after he has soiled himself causing him to be stuck to a leaf and cried for a whole day with no one helping him. They are the first and only people to stop and help baby Finn while everyone else just walked past him. Joshua seems to be disrespectful and irresponsible. He speaks in a 1940s American's accent.

Joshua returns in "Crystals Have Power" where his ghost from beyond the grave bothers Jake to fight back against the Crystal Guardians of the Crystal Dimension when he takes a vow of non-violence. Jake became upset when he remembered Joshua telling him that "Jake would hurt everyone". Jake also sees his brother Jermaine in his flashback. To be noted, Joshua was trying to tell Jake that "Jake would hurt everyone... that is evil." Joshua's personality is demonstrated as a very macho male who is willing to push his sons to fight, particularly when they need to.

Quotes
Joshua and Margaret/Quotes

Trivia

 * He is dead.
 * Unlike Jake, he cannot stretch.