You probably know Hexage. This developer has been a part of the Android gaming landscape since the beginning with titles like Radiant, EVAC, and Robotek. Hexage's newest title is the 2D action RPG Reaper, and it looks amazing.
This game takes the essence of an RPG and distills it to work effortlessly on a mobile device. There aren't a plethora of buttons all over the screen, just left and right controls and a gesture area for attacks and jumps.