I was wondering why the enemy Keepers got such high-pitched voices for dark lords who command hordes of monsters. Then it struck me. Just like you, they possess a creature (In this case, an imp since they're easily expendable) and throws it at your minions just to trash talk you. Because they're using an imp's mouth to talk, of course the enemy Keeper sounds like a hamster!
The rivalry between the Dark Mistress and the Samurai can be explained by the former being a lustful Combat Sadomasochist, while the latter is a chaste Proud Warrior Race Guy who is honorbound. Both are being faced with someone on the opposite alignment who embodies what they hate most, and who also happens to be the most annoying matchup in a fight (made worse by both sharing the Lightning spell). The Dark Mistress focuses on hit-and-run spells and refuses to fight in prolonged combat, while the Samurai also uses spells to lock opponents in place and then tear them apart in melee.
