The second Krystal Easter Egg has been found. Anton Antonov Marinov shows his support for Krystal in the 2014 game Talos Principle.
One of the developers seems to be a big Krystal fan, which is why his wanted poster in the game talks about it.
Peppy Hare had a little Easter Egg in the latest Star Fox Zero trailer.
The new Star Fox level in Smash Bros. for the Wii U is missing Krystal and Star Wolf, even in the cameos.