twilight sparkle = yugi (main protagonist)

alicorn twilight = yami yugi (superpowered version of main protagonist)

rainbow dash = joey (obvious casting/i’m not very good at explaining too deep :\)

fluttershy = tea (peaceful, yet kleptomaniac)

pinkie pie = tristan (random)

rarity = mai (same reason as rainbow dash = joey…)

trixie = seto (main protagonist’s rival)

silver spoon = mokuba (just seemed to click with me :\)

princess luna = marik (heroes turned to dark side and back again)

nightmare moon = melvin (because evil version of marik)

snips & snails = rex & weevil (this one’s obvious…)

diamond tiara = noah (this one’s also obvious… also because rape face…)

jet set = gozaburo (because filthy rich was too nice for the role…)

roid rage = hobson (another obvious one…)