Those Random Buff Growth Spurts by muscleartguy -- Fur Affinity [dot] net
Yoshils - Zapper Growth by Yoshils -- Fur Affinity [dot] net
muscles & bulges on Twitter: "@gryblak @greggrth @Pjez_ I imagine whatever he did on his phone has a maximum setting that he wasn't able to adjust... let me help~" / Twitter
Random Growy [Furry] Arts — Another commission to do a buff Asriel, this time...
Buff Fanart Growth Drive: Shirou $900 by CaseyLJones on DeviantArt