Their mission is simple. "We want to tell people around the world that you should embrace disability, not hide from it," the twins said in an email interview with CNN.
Growing up in Eritrea, the sisters had a happy childhood, and like many twins, they share a special bond.
Hermon once injured her cheek while riding her mountain bike. Heroda wasn't even with her but said she knew something had happened.
"When my left cheek started hurting, I knew she was in trouble. ... It was the only explanation for my pain," Heroda said.
It took their parents a long time to realize the girls were deaf.
"We were playing together in the backyard of our parents' house; our mother was trying to call our names, and we did not hear at all," the twins said.
Their brother was also deaf, so the family decided to move to the UK to seek medical help.
'Deaf people can do it'
Hermon's acting journey began after she took a trip to South America, while Heroda's confidence grew when she landed a role in a television commercial
As far as Hermon is concerned, "Deaf people can do it like everyone can."
"We had quite (a lot) of barriers through our lives, especially (our) career, but we fight for it. ... We will have to use our deafness and being black women to break these barriers."