Suit - 161 Halloween Costume Ideas
A suit reads as intentional the second you put it on, which is why it shows up on everyone from Willy Wonka to Loki. Fit matters more than the specific character here, a suit that's too big undoes the whole costume.
Get the fit close even if you're renting or thrifting. Tailoring a jacket at the shoulders is cheap and makes a bigger difference than any prop you add on top.
The character usually lives in the color, tie, or one small detail layered over the suit, not the suit itself. Check the specific guide before assuming plain black works.
Often, yes. Check the character's guide, plenty of these looks depend on a specific color or pattern to read correctly.
Yes, and it's usually the cheaper option if you don't already own one that fits well.
Get it tailored at the shoulders if you can. A boxy, oversized suit reads as "borrowed," not "costume."