most of them are from deviantart,a lot from another

IIRC, series are supposed to go in their own galleries, i.e., "no compilations." That would mean that you should move 02-07, 13-32, and possibly 49-55 to separate galleries. Additionally, and most importantly, almost none of these are actually Nitemare99's works. He is not an artist, he's a commissioner. He does colour some of them himself, though.

Image 01 is Nitemare99's colouring, but idleHQ's line-art — idleHQ.deviantart.com
Images 02-07 aren't his work at all, they're by Marrazan — also at dA, marrazan.deviantart.com

@inukuko
I'm curious about the images he coloured though, do they go in a 'Nitemare99 gallery,' an 'idleHQ gallery,' or both? (I think it's the latter, not sure though.)

Base +10, randomname12131412 +6, Jenkitsune +6

I think you are getting nitemare confused. I'm a pal of this guy and he can't draw...at all. none of this work is his. this is just his chactors that he commissioned, and some of them aren't even his characters, they are idlehq's

Base +9, primeemu16 +6, Jenkitsune +6, Electric Angel -6

#12 by Modeseven (KamiNitro)

Base +8, Jenkitsune +6