Yup, I do try to satisfy everyone, however difficult it is.
Grimjack is mainly serving to guide people in the "real" section of the Multiverse since he was born into interdimensional weirdness, and when we meet him Kalama will have paid him his fee tenfold. We're also using Cynosure as a base of operations now since it's much safer than the Void and just as good a place to enter new universes from (and should be a fun place to explore anyway what with the interdimensional weirdness it has, considering it sits at the very heart of the Multiverse). I felt Cynosure would be an excellent addition that's easy enough to weasel in. A brief description of the city.
Cynosure is the nexus of all dimensions, built there as a trade hub. It rapidly became the largest trade hub in all of reality, a place that every good interdimensional merchant would try to set up shop. This also means it's the largest city in all reality, taking up an entire dimension of its own. As a result, Cynosure is essentially an infinitely large city. Buses transport people from Cynosure to any dimension that happens to intersect its own dimension, and every dimension (save for one pocket dimension that was cut off as part of a contract Grimjack took up, but this had to be artificially done). Physics behaves in very strange ways in Cynosure. Sometimes science will reign supreme, other times magic will run rampant, still other times the two will clash and nullify each other entirely. Despite this hazard, it's still much safer than the ravaging nothingness of the Void.
But yeah, I realize he's a bit underpowered, but I plan to mostly focus on interaction with him, something not so common with this RP that I'd love to see more of.
EDIT: Also, what Dark Samus just absorbed from Chaos is his pyromancy.
Keeping to Grimjack's persona shouldn't be too hard. I have about thirty or forty issues of his comic sitting on my shelf in my collection. I highly recommend them if any of you want some new comics to read, they're very entertaining.
EDIT 2: Slight screwup on the CS, I forgot the correct color of the cape and failed to notice on the image I included (it's blue, not red). Already edited.