Roger Sweet, the toy designer credited with creating He-Man, has died at 91 after battling dementia.

Sweet — the mind behind the muscle-bound star of ’80s animation “He-Man and the Masters of the Universe” — died peacefully Tuesday morning at a care facility, his wife Marlene told TMZ .

The He-Man creator’s final months were marked by serious health struggles.

Roger Sweet, the creator of He-Man, has died at 91 after a battle with dementia. GoFundMe

Marlene previously revealed that Roger suffered a scary fall while walking alone and couldn’t remember what happened.

Doctors later found two brain bleeds, and he was rushed to the ICU before being moved into a memory care facility, costing more than $10,000 a month.

Faced with steep bills, Marlene turned to the public for help — and fans showed up.

Her GoFundMe blew past its $50,000 goal, ultimately raising nearly $94,000 from supporters who grew up on the iconic franchise, and the Mattel Foundation also kicked in $5,000.

Born and raised in Akron, Ohio,…