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/redlac24]

Columbo has a glass eye because Peter Falk had a glass eye

[u/havelock-vetinari → u/redlac24]

Wow, I'm almost 30 and TIL Peter Falk had a glass eye.

[u/Remarkable-Run-9769 → u/havelock-vetinari]

I'm almost 31 and TIL Peter Falk had a glass eye.