Thanks for the feedback. The slimes were created with separate classes in mind, but we did not have time to balance them well, so the stats are currently very similar, and we didn't add any descriptions about their differences. The most notable difference comes in their starting items. We will differentiate them at least with more defined stats, and may add special abilities for each. One of the slimes is meant to be your healer, and will likely get a healing spit move, to heal an ally.
Our kids love slimes, so when they saw some art assets with slimes, they asked if the slimes could be our heroes, and we went with it. That actually changed the design of the game somewhat, as it was originally just humans using single use items (enemies as well). With the idea that the slimes ate items, it freed us to have a reason your party was mostly single use, while the enemies could use equipment for regular attacks.