Hollywood has been known to utilize prosthetics as part of movie (and TV) magic — but never has a prosthetic come under fire the way it has for Chris Sullivan, who is best known for wearing a fat suit playing Toby on This Is Us.

The actor, 36, plays the love interest to Chrissy Metz’s character Kate — and weight is a pivotal part of their storyline, as the two met in a support group for people struggling to lose weight, and much of the season 1 plot follows their journey to lose weight together.

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So, as you can imagine, there was significant backlash when it was revealed that he was in fact wearing a fat suit to play the lovable character on the hit NBC drama. Even Chrissy chimed in, defending her co-star and his casting.

toby this is us getty images

“We tested a lot of gentlemen who were bigger, and I get it — people think the authenticity is kind of ruined by that,” she said on Watch What Happens Live. “But Chris has been heavier, so I think he understands the plight of being overweight. People wear prosthetics all the time — it’s just weight as opposed to, like, a nose or a chin. It’s just kind of the name of the game.”

MORE: Chrissy Metz Reveals How She Differs From Her 'This is Us' Character

So what does Chris look like when he’s not playing Toby? Check out the pics in the gallery to find out!