I mean, you got to think about it, Edgar is able to keep a chainsaw, a drill, a "noiseblaster", a drill, and a bioblaster on his person, ready at any moment to use them.

How?

I mean, I know it's a video game, but haven't you ever wondered? Like, an inventory bag makes sense, but that's a cop out answer. I always figured he used the same basic mechanism, and then hid the alternate parts under his cape. Or something like that.