The Human Centipede 3 (Final Sequence) is a 2015 black comedy body horror film written and directed by Tom Six and starring Dieter Laser and Laurence R. Harvey, the leading actors from the first two films in new roles, Robert LaSardo, Tommy "Tiny" Lister, Jay Tavare, Eric Roberts, Bree Olson, Clayton Rohner, and Bill Hutchens as well as a cameo by Six.

Bill then waterboards the inmate who prank called him with three buckets of boiling water as punishment, horribly disfiguring him.

Dwight pitches an idea to fix the prison's horrible retention and violence rates to Bill: suture all of the inmates together mouth-to-anus, forming a giant human centipede, which would be the ultimate deterrent to crime.

In addition to the centipede, a "Human Caterpillar" has been created by suturing together death row inmates, along with those who were given a life sentence, and amputating their limbs.

In the final scene, a naked Bill screams with joy in the lookout tower overlooking the Centipede while the Star-Spangled Banner plays.

In an alternate ending, Doctor Josef Heiter lays in his bed, implying that the previous events were part of a dream.

[8] Six chose a prison setting to bring back the theme of "punishment" that generated the idea for the series, although Six admits that "I totally ignored [it] in the first two films.

[1] The film passed uncut in Australia on 6 May, with an R18+ rating, and screened in a national tour throughout June, with Harvey appearing as a special guest.

The site's critical consensus states that "Human Centipede fans may find enough extreme body horror in the third installment to satisfy, but filmgoers of every other persuasion are strongly advised to stay far, far away from Final Sequence.

Club also ranked the film as the second worst of 2015, declaring, "Writer-director Tom Six lives for disapproval, and he’s finally made a movie that basically no one—not even those amused or unnerved by the past two installments—could possibly enjoy.

"[17] In his review for Variety, Dennis Harvey noted, "As with earlier chapters, the packaging is as competent (if not particularly inspired) as the content is remedial.

Indeed, perhaps the series' only really good joke has been the inherent absurdism of seeing an ever-rising level of expense, polish, and now "name" actors applied to something so fundamentally dumb.

"[19] The New York Times critic Jeannette Catsoulis said of the film, "An ugly, claustrophobic celebration of sexual violence that’s anchored by one of the most repellent characters ever to appear on screen: the prison warden Bill Boss.

"[20] Greg Cwik of Indiewire gave the film a C− and said: "Final Sequence is too self-serious to be camp, but too silly to be scary, so Six just settles for gross.