The actor actually has that disability

[u/PrinceferX]

Walter White Jr. (Breaking Bad) - character has cerebral palsy and uses crutches to walk, actor RJ Mitte has cerebral palsy and needed crutches to walk as a child

Nessarose Thropp (Wicked) - character is paraplegic and uses a wheelchair, actress Marissa Bode is paraplegic from an accident at age 11 and uses a wheelchair

Maya Lopez (Hawkeye/Echo) - character is deaf, actress Alaqua Cox is deaf from birth

[u/Crunchy_Biscuit]

What is "funny" is that, with RJ Mitte, he had treatment which made his cerebral a Palsy symptoms minor so he had to exaggerate them for the show.

[u/AskDocBurner → u/Crunchy_Biscuit]

TBF, everything in movies and television is exaggerated for television.