I'm ready for Castlevania October Month with my Wii-U (and its virtual Wii mode 'vWii'):
-Castlevania 1 (NES Virtual Console - vWii)
-Castlevania 2: Simon's Quest (NES Virtual Console - vWii)
-Castlevania 3: Dracula's Curse (NES Virtual Console - vWii+WiiU)
-Super Castlevania IV (SNES Virtual Console - vWii+WiiU)
-Castlevania Bloodlines (Sega Genesis Virtual Console INJECTION - vWii)
-DraculaX: Rondo of Blood (TG16 Virtual Console - vWii)
-Castlevania: The Adventure Rebirth (Wiiware - vWii)
-Castlevania: The Adventure (vWii Softmod - vbagx)
-Castlevania Adventure 2: Belmonts' Revenge (vWii Softmod - vbagx)
-Castlevania Legends (vWii Softmod - vbagx)
-Castlevania: Harmony of Dissonance (vWii Softmod - vbagx)
-Castlevania: Aria of Sorrow (vWii Softmod - vbagx)
-Castlevania: Symphony of the Night (vWii Softmod - WiiSX)
-Vampire Killer (vWii Softmod - BlueMSX-Wii)
-Haunted Castle (vWii Softmod - MAME Wii)
And in October:
-Castlevania: Circle of the Moon (GBA Virtual Console - WiiU)
-Castlevania: DraculaXX (SNES Virtual Console - WiiU)
Very difficult titles to play on vWii/WiiU:
-DraculaX: Gekka no Yasoukyoku (vWii Softmod - Yabuse Saturn Emulator - doesn't load)
-Castlevania Chronicles - X68000 (music is choppy on WiiSX, no x68000 Wii emu)
-Castlevania 64 (can be injected into F-ZeroX Virtual Console, but you won't be able to save... HARRRD)
-Castlevania: Legacy of Darkness (plays choppy when injected into F-ZeroX Virtual Console, AND you cannot save)
Definitely impossible:
-Any LoS title
-Castlevania: The Arcade
-Any Pachislot title
-Castlevania: The Medal
-Tiger Handheld
-SotN Game.com
-Resurrection
-...other stuff that might not run on WiiU/vWii...