I've been writing and running some Lua script tests lately, thanks to TheCowness as I took most of the work from him. I've been using them to test specific chances of things happening in various Dragon Warrior games.
Here is one that I ran on for Dragon Warrior 2 (script here). This script loads a preset state over and over and records the chances that either Middenhall, Cannock, or Moonbrooke are targeted in battle.
From what I already knew from speedrunning this game, I was fairly confident that it was an equal chance for each character to be targeted. This just confirms my suspicions and helps my sanity for whenever I see Moonbrook targeted and killed during the grind segment. I might double check this for a couple more enemies, but I'm pretty sure that this holds throughout the game.