He-Man Co-Creator Roger Sweet Dies at 91 After Battle With Dementia

Roger Sweet, the toy designer credited with helping bring He-Man and the Masters of the Universe to life, has died at the age of 91 following a battle with dementia.

Sweet passed away peacefully at a care facility, according to TMZ, months after his declining health had been publicly shared by his wife, Marlene. Earlier this year, she revealed that he had been diagnosed with dementia and required specialized memory care, prompting a fundraiser to help cover the high cost of treatment.

Sweet’s impact on pop culture dates back to his time at Mattel in the late 1970s and early 1980s. After the company missed out on the rights to produce toys for Star Wars, executives sought a new concept that could compete in the booming action figure market. Sweet, then a lead designer, pitched the idea of a powerful, muscular hero, an idea that would evolve into the He-Man franchise.

The character debuted as part of the Masters of the Universe toy line in 1982 and quickly became a massive success. The following year, the franchise expanded with the animated series He-Man and the Masters of the Universe, turning the character into a global icon and cementing Sweet’s place in toy and entertainment history.

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In recent months, Sweet’s condition had worsened. His wife previously shared that he suffered a serious fall that led to further complications, including brain injuries, before being moved into long-term care. The fundraiser launched to support his medical needs drew widespread support from fans and the industry, surpassing its original goal and receiving contributions from organizations tied to his work.

Sweet’s passing comes as a new live-action Masters of the Universe film prepares for release later this year, highlighting the lasting relevance of the world he helped create.