Truly have been asked more times than I can count

Yes, I belong in here; I just have a deep voice.

i wish that show would come back so i could get some more shoreleave. lol

Answer the question, OP

Honestly I rarely ever wonder if someone is trans and even less so with fictional characters and their voice actors. Most boys in media are voiced by women anyway.

Women are made to suppress their natural features so much to the extent that transphobic men think features that are naturally common on cis women are a sign of being trans. I (cis woman) have a moustache, all of the cis women in my family have visible facial hair, and it's quite common for women, especially non-white women, to have some amount of dark facial hair. But we're expected to wax it or shave it or laser it off, so people think facial hair on cis women is unheard of. There's a huge range of natural diversity that just gets suppressed.