Lode Runner
In the DOS version, press CTRL-F3 to activate monk mode. Control him using: T, Y, U; G, H, J; B, N, M. Press TAB to use him.
In the Windows version, in the main menu, click on the upper left corner spot, and type CTHULU (for v1.2), or YOG (for v1.3). When done right, a "gang" sound is heard. Control him with the above keys (same as the DOS version).