via http://www.aep-emu.de/

Marat Fayzullin has ported his (commercial) Game Boy / Game Boy Color and Super Game Boy emulator VGB to the Android platform: VGB for Android

Quote:
New in 3.5.11:
  • Added ability to open files with my other emulators (i.e. VGBA, iNES, etc).
  • Added support for ZIP files.
  • Made corner buttons thinner to avoid overlaps.
  • Added configurable fast-forward button.
  • Made screenshot sizes uniform.
  • Limited landscape-mode joystick size, so that it does not grow too big on tablets.