Famous blue cartoon characters like Genie, Stitch, Smurfs, Dory, Road Runner, and Sonic have cross-generational appeal spanning decades. Blue character Cartoon Dory Finding Nemo (2003), Finding Dory (2016) Road Runner Looney Tunes, Merrie Melodies Megamind Megamind (2010) Genie Aladdin (1992) Rainbow Dash My Little Pony: Friendship Is Magic (2010) James P.