Arlene Dunn is one of the Misc. Women characters that can be selected in the Outfitter. Her character model is unlocked upon reaching Multiplayer Level 29.
Dunn appears to be a Mexican villager, as her outfit is synonymous with those worn by the female Mexican villagers throughout the game, although she has injuries on both her left wrist and her right ankle.
She is sometimes mistaken for Luisa Fortuna, as there are only subtle differences in each character's appearance.