I think the answer is just PM their online name and presumably the system will tell you if such a name exists.
Now with tongue firmly wedged in cheek, lets look athe images my guides and mentaurs offer:
Repoman = Terminator
Lushe = Nosferato
Krusty = Montgomery Burns
On the help and support forum!!!!!!!
I propose
Repoman =JFK
Lusche = Martin Luther King (Junior)
and Krusty = Big Bird from Sessamy Street.
(Much more appropriate)