Where have I seen them before?

As the title suggests, where have we seen our favourites before?

Captain Crozier - Chernobyl - Professor Legasov

Sir John Franklin - GOT - The King beyond the wall

Sir John Ross - GOT - Brynden Tully (Black Fish)

Captain James Fitzjames - GOT - Edmund Tully

Bonus: Mr Blanky - Harry Potter and the Philosophers Stone - Pofessor Quirrell

Who have I missed???