The question is not clear. Here are two answers.
As written the answer is ¿"Eres Miguel hermano"?
If you meant "are you Michael's brother", the answer is ¿"Eres hermano de Miguel"?
Hermano is brother in Spanish
Miguel
'hermano' is the usual word for brother
You could say "Se llama Michael" or "Su nombre es Michael".
el hermano
Para Miguel
te amo Michael Jackson
cualquier hermano!
Hermano. Sister is Hermana
hermano chocolate
hermano feo
The language is called Spanish, and the word for brother is hermano.