The Theory: Dopey and Geppetto are the same person. The Evidence: There's the striking resemblance between the two, and a convincing backstory from one Tumblr user: "There were always 6 dwarves. Wandering around, they found a baby and thought it was a dwarf. ‘Dopey’ grew up with this ‘family’ that was holding him back (hitting him, making him do the hard labour). When he grew taller than them, they kicked him out and he walked all the way to Italy, where he started building up his own home…
