Their most recent mafia!fell sans drawing is by cyberkitty117 on deviantart (link: https://www.deviantart.com/cyberkitty117/art/Mafiafell-Sans-Sing-n-788300742)

Their most recent flowerfell frisk art (which was removed from the random art community and reposted to the flowerfell community) was made by Auraspirality on tumblr (link: https://auraspirality.tumblr.com/post/151403652491/our-1st-inktober-art-request-flowerfell-frisk-i)

The flowerfell art before that that had both frisk and sans was made by hamivitita on deviantart (link: https://www.deviantart.com/hamvitita/art/Undertale-Anemone-OvergrowthFanart-596764653)

The sans meme-ish drawing was made by kychuk on tumblr (link:https://kychuk.tumblr.com/post/183064549397/hellooooo-ive-made-some-animation-meme-again-lol)

The flowerfell art before that was made by yoralim on tumblr (I can't get the link because the blog was deleted sadly)

The flowerfell frisk art before that was made by sinfulZany on deviantart (link: https://www.deviantart.com/sinfulzany/art/Flowerfell-Frisk-689807141)

And that's all I got for now! Again please do not harass or attack the art thief in any way! Just report them and spread awareness on them! And again, please give the original artists some love!