Virus uses the same Fatar keyboard as Kawai K5000, Novation Supernova2, Roland A70, E-MU E4K and Quasimidi Raven.
I also like Yamaha keys can be found on various synths from DX5 to Motif. As I know, the same (Yamaha!) keyboard is used in Korg's workstations from M1 to Triton.