gement | A ridiculous number of helpful friends

Warning, game geekery.

So, when I wanted to explain why my last villain got trounced, I realized even a partial listing of the reasons would sound so cheesy it hurts. As a GM, I'm allergic to cheese. I hate it. I try like hell to never give anyone toys that don't match the nature of the world or seem too coincidentally convenient.

But I just took a long soul-searching look at the make-up of my game's cast, and decided that they're way overpowered.

A listing of characters and their toys

Bey - the Watcher. Made a deal with the Big Bad for a book that (with some very important but secret caveats) lets him learn anything he wants. [Yes, this one was a game-breaker, and I knew it when it happened.]

Phoenix - the King of Pain. You know, Mr. Billowy Black Coat. He's a very very very strong human, with everybody's favorite combat-monkey kung fu stats.

Calypso - the witch. The character is usually nicely scooby-powered, but she's been playing Fight Club with herself lately, and her second self isn't afraid to use her full magical potential. She's so useful and there's so much going on that the gang hasn't gotten around to turning her back.

Rob - the robot. He's a low-involvement player and a devotee of giant-robot anime, so I let him be a Buffyverse robot. He mostly is good for grabbing villains when the slayer tells him to, but he's quite strong, and it turns the tide of battle dramatically.

Hazel - the hacker. OK, she's a wussy-girl.

Taken individually, each of these things are soundly supported by game dynamics and reasonable back-story. But you can see how this team could make mince-meat of most standard power level plots.

So. They have a very powerful, nigh-omniscient Big Bad to face (the Djinn roughly outlined in the sourcebook), and they can't fight it particularly effectively with these toys, but it's making anything smaller a romp.

Do I cut down their power level? Accept that they're attached to their toys and up the other monsters? Or do I let them romp through the smaller villains because it obviously makes them happy to do so?

And am I missing any choices? How do people handle this situation, and how do I turn my heart to stone to stop giving them bonuses that "seem reasonable at the time"?

I throw myself on the altar of Good Plot and Fun Game. What must I do?