Dude that's the same VA. The end of the video has a tumblr name which has this video which links to a youtube page which has a description which states that "Omega Flowey voice clip is by crashboombanger.tumblr.com !"
Yeah, especially the "Before I become God" part - never played the System Shock (?) games, but I've seen some playthroughs. Wonderfully chilling voices.
I am certain it's a girl based on the color scheme, hair style, and general design.
If the author wants to shoehorn some "androgynous" nonsense around, I won't play along.
As soon as I made my comment, I noticed it's even easier to change if I'm not looking directly at the image. Try looking at this comment and in your peripheral vision trace the foot as if it was moving counter clockwise, then look directly at it.
I can make it go both ways. It's easier for me if I look at the foot, when it gets to the right think about that leg going behind the body and suddenly it looks like it does. To me, anyway.
What's really trippy is when I lose concentration and for a couple of seconds it looks like it's going both ways at the same time. I cannot describe the experience, it's just a really confusing brain glitch.
Well, I guess if you want it to be a girl, you can do that. The author made Frisk's gender nonspecific so you can think whatever you want of the character you play as.