Some of my favorites ...
NOISE:
(knocks over BICYCLE! disrupts AIRPLANE! summons SATAN!)
ROBOT:
(knows no DEATH! smashes through WALL! carries CHAINSAW!)
MONKEY:
(flings poop at MAN! irritates VAMPIRE! shrieks at UFO!)
MEDUSA:
(terrorizes SCHOOL! evades HELICOPTER! discards TURNIP!)
5,050 possible outcomes. And he's figured all of them out.
For something comprehensible by an actual human brain, he has also developed RPS-7, RPS-9, RPS-11, RPS-15, and RPS-25 variants.