Not futa but i wanted to have this, better to post here than in futanari comics.
Big muscular female pyramid head chases guy to a bubble head nurse and hes compelled to have sex with it until pyramid head catches up.
Muscular futa manga/comics on Futapo:
Mission Failed Comic by X-teal2
Dragons Crown Summer of Sorceress Summer of Amazon Manga by Marumiya
Overfuck Overwatch Comic by Hecchi Dechu
Mesubuta Shoutai Cum Dumpster Manga by Chinbotsu
Kishi Ryoujoku Hime-sama dake wa Te o Dasuna!! Manga by Mikoyan
Futa on Male:
Poison XXX Final Fight Manga by Musashi Dou
A Heros End Comic by ThirtyHelens
FutaKuri Futanari Clinic Manga by Musashino Sekai