Ilyana is a character who works at the Cabaret in Folsense and tries to entice customers into the Cabaret. She takes a shine to Luke Triton. She seems to know Beluga very well and often gets gems from him, then sells them onto Dawson, the antique shop owner.
Ilyana looks very glamorous with a white feather boa and lilac dress.
Ilyana gives the following puzzles in Professor Layton and the Diabolical Box:
"Ilyana works at the Folsense cabaret, one of Beluga's favorite places to unwind. Beluga has quite a soft spot for her and often buys her ugly but lavish presents, so she makes some money on the side selling these baubles to the antique shop."