Russian skaters of the past

This needs a stretch. (Feel free to remove when satisfied of completion.)
Needed:
* Personality.
* History is incomplete.

Articles needing expansion
Ghosts and ghouls
Projections
3 more
Scooby-Doo (DC Comics) characters
Scooby-Doo (DC Comics) monsters
Scooby-Doo (DC Comics) villains

The Russian skaters of the past were projections created by Mrs. Petrova.

Physical appearance[]

They were ghosts in appearance of humans. They also wore different clothing. They were under ice.

Insert details here.

Mrs. Petrova created them to scare Natascha Krylova because she had fired her.