How did you...

[.:kingland:.]

How did you get the ghost in the help desk?

[dogboy123]

HxHD was chosen by Ludus to get one, as we appear on the Habboween group page for a scary room

[Alkaz]

The Habbo 'Ghost' is a bot, like dogboy123 said.
The ghosts which fly around are avaliable in the cat in a jack-in-the-box type thing for 8 credits.