Gretel Auerhahn - 

A clock maker from the Black Forest of Germany 

She was at the costume party dressed as a cuckoo.

Bertram "Budgie" Benson - 

English talent agent and former music hall performer

He'd worked with The Great Radinski, and was dressed as a desert sheik.

Jenny Featherstone -

Radinski's magician's assistant 

She lived with him in his Mystic Lake mansion.

Gwendolyn Jones -

A Welsh woman who breeds and trains exotic animals for stage and screen

She was costumed as a queen.

Roger Quigley -

An Australian whose offices are in Singapore

He claims to be an international trader and was there dressed as a pirate.

Ivan Radinski -

First cousin of The Great Radinski

He is a cellular phone entrepreneur focusing his attention on Eastern Europe. He came clad as a Polar explorer.

Baroness Maria Julianna von Hofburg Schlossbrunn  -

A Hungarian noblewoman

She accompanied The Great Radinski during his recent European tour. She was in the garb of Madame Butterfly.