[M2Ys4U]

>If he goes into the parliament building without his costume, it would be a bit awkward if, say, they were required to address him by his Count Binface alias.

Members of Parliament aren't allowed to address each other by name in the Commons chamber.

All debate must be addressed to the Speaker (or Deputy Speaker if one of them are chairing the debate).

References to other members are made in the form of "the X member for Y constituency", where X is:

- "honourable" (the default);

- "right honourable" if they are sworn of the Privy Council (i.e. they've been a minister in the past);

- "learned and honourable member" (a qualified lawyer); or

- "gallant and honourable member" (somebody who has served in the armed forces).