WHEATLEY16'S PROFILE

eehhhh.. this is a bit questionable. if you're going to do this, i'd suggest asking the original artist. in my opinion, if you can't make your own sprites you should either use a ftu sprite base from a site like da or tumblr, OR make your own template with the rtp, don't trace the sprite, but make a box around the characters in the spritesheet and erase the original characters, then make your own sprites. you can reference the sprites you want your characters to look similar to, but don't make it look identical to the sprites that you're referencing (unless it's something like a fangame), people could potentially think you copied or traced someone else's sprites.

i'm unsure about the legality of using these sprites, i'd suggest that you try to find out what the copyright license is and if it allows derivatives.

if you have no other options, than at least credit the sprites.

using other people's sprites as placeholders is fine though, just get rid of the files once you have your own assets.