Aliasing rainbowdashie → nightmaremoons
Link to alias

Reason:

This artist has been using those two names for at least 3 years now. It seems nightmaremoons is his primary name and he uses RainbowDashie only to promote his art on DA - the DA profile apparently contains only low-res and "sanitized" versions of his commercial Patreon art. Or at least, virtually every RainbowDashie DA page says "support me on Patreon" and it links to his nightmaremoons Patreon profile. See for yourself:

http://rainbowdashie.deviantart.com/
https://www.patreon.com/nms?ty=h

BTW, I'm aware about forum #90497. But I asked him again recently and he gave permission to post his DA art here (full-sized Patreon art is DNP as usual).

I would recommend adding the _(artist) suffix, because either of those names could be mixed up with the characters, Rainbow_dash and Nightmare_moon.

Looks unnecessary to me, nightmaremoons has been here for 2 years and there don't seem to be any mix-ups.

Approved

Furrin_Gok said:
I would recommend adding the _(artist) suffix, because either of those names could be mixed up with the characters, Rainbow_dash and Nightmare_moon.

If they were exact names, then definitely, but misspellings are unlikely in this case, so it should be fine.