Castlevania II - Belmont's Revenge/Notes

DRACULA 1 SPRITES
Below: idx / address / name
Unused sprite indexes are left blank
Note that 74/79 (Extruder tip left/right) is available in all sublevels, despite being overwritten (with itself).

1-1 and 1-2 (no patch occurs in 1-2) patch x15 sprites from 3:41E0 to $DFD6 (6B-7F) and x0E sprites from 3:40BA to $DFBA (5D-6A)
 6B 4700 Night Stalker standing leg back holding boomerang
 6C 4710 Night Stalker standing leg middle holding boomerang
 6D 471D Night Stalker standing leg front holding boomerang
 6E 472D Night Stalker standing leg front raising boomerang
 6F 473A Night Stalker standing leg back
 70 474A Night Stalker standing leg middle
 71 4757 Night Stalker standing leg front
 72 4767
 73 4777 Night Stalker crouching arm up holding boomerang
 74 4E0A (1-2) Extruder tip left
 75 4797 Boomerang pointing up
 76 479E Boomerang pointing front
 77 47A5 Boomerang pointing down
 78 47AE Boomerang pointing back
 79 4E0E (1-2) Extruder tip right
 7A 4787 Night Stalker crouching arm out
 7B 4C9F
 7C 4C9F
 7D 4DC5
 7E 4DD8
 7F 4DF7

 5D 4560
 5E 456F
 5F 457E
 60 4586
 61 45EE Raven perched
 62 45F8 Raven flapping wings back
 63 4605 Raven flapping wings middle
 64 460C Raven flapping wings front
 65 482C
 66 483C
 67 484C
 68 485C
 69 485C
 6A 4869

1-3 patch x09 sprites from 3:40D6 to $DFD6 (6B-73) (Note: Skeleton overwrites Night Stalker, but not Boomerang and Raven)
 6B 469A Skeleton on rope neck straight
 6C 46A7 Skeleton on rope arm behind
 6D 46B7 Skeleton on rope arm up
 6E 46C4 Skeleton on rope arm grabbing rope
 6F 46D1 Skeleton on rope arm folded
 70 46DE Skeleton jumping
 71 46EB Bone diagonal down
 72 46F3 Bone vertical
 73 46F7 Bone diagonal up

1-4 patch x10 sprites from 3:41E0 to $DFD6 (6B-7A) (Note: overwrite Skeleton & Bone with 1-1 sprites)
 6B 4700 Night Stalker standing leg back holding boomerang
 6C 4710 Night Stalker standing leg middle holding boomerang
 6D 471D Night Stalker standing leg front holding boomerang
 6E 472D Night Stalker standing leg front holding boomerang above head
 6F 473A Night Stalker standing leg back
 70 474A Night Stalker standing leg middle
 71 4757 Night Stalker standing leg front
 72 4767
 73 4777 Night Stalker crouching arm up holding boomerang
 74 4E0A Extruder tip left
 75 4797 Boomerang pointing up
 76 479E Boomerang pointing front
 77 47A5 Boomerang pointing down
 78 47AE Boomerang pointing back
 79 4E0E Extruder tip right
 7A 4787 Night Stalker crouching arm out

1-5 patch x0F sprites from 3:410A to $DFD6 (6B-79) (Note: overwrites Night Stalker and Boomerang with Mud Man)
 6B 4616 Mud man drop
 6C 461A Mud man puddle
 6D 4622 Mud man rising/collapsing from puddle head down
 6E 4629 Mud man rising/collapsing from puddle head up
 6F 4633 Mud man puddle tiny
 70 463B Mud man standing leg back
 71 4648 Mud man standing legs middle
 72 4652 Mud man standing leg front
 73 465F
 74 4E0A
 75 466F
 76 467F
 77 468F
 78 47AE
 79 4E0E 

Snake Boss patch x0E sprites from 3:41CA to $DFBA to $DFD5 (5D-70) (Note: overwrites Mud Man)
 5D 4FA0 
 5E 4FA0 mouth open (same sprite as above, but the slot isn't used)
 5F 4FA7 mouth closed
 60 4FAE Head for mouth open
 61 4FB8 Head for mouth closed
 62 4FC2 Neck
 63 4FC2 Neck (same sprite)
 61 4FCF Body element
 65 4FD9 Body element inflated
 66 4FE3 Tail body element
 67 4FED Tail element
 68 4700
 6A 471D