Toshinori Yagi/All Might:

He didn't think anything of it. Almost everyone has a plushie, toy or doll that looks like him so he's used to it. He won't mind you having a doll of him, but if you have a room full, he will awkwardly ask you to stop buying dolls of him because this is getting weird.

Shota Aizwawa/Eraser Head:

He will stare before asking you why you have some ugly doll of him. When you said the doll's not ugly, he huffed and eyed it, asking if you are still some child. When you gave him a glare and said he should be happy since it means you are supportive of him, he frowned but didn't continue the conversation and just decided to change the topic.

Hizashi Yamda/Present Mic:

He snickered, taking it, saying he never seen this doll yet before asking where you bought it. When you told him, he went to it to see all the dolls he never seen before. He bought a doll that looks like you before putting the two dolls together and send a picture of it to the group chat he started with Aizawa and Midnight, putting #Relationshipgoals beneath the picture, which Midnight said is cute while Aizawa told him to stop inviting him to these dumb group chats.

Nemuri Kayama/Midnight:

She will chuckle, saying it's so cute before asking you where you bought it, saying she must buy one that looks like you. So she did and put the two on a shelf, posing them cutely. Whenever she walks past it, she will chuckle, finding it so cute.

Keigo Takami/Hawks:

He will just eye it, used to people having dolls and plushies of him. But once he came home after a battle to see you sleeping, hugging a plushie of him. He frowned before crawling aside you, taking the plushie and tossing it away before hugging you, muttering not to hug some plushie when you have him.