Partner character

References

1. ^ abDracula's Curse keeps two character slots; a swap flips the slot index with XOR 1 and loads that slot's character, one of four ids, Trevor, Sypha, Grant, and Alucard.Codevinheim3/castlevania3-disasmrevised
   How we know

   360wUsableChars: ; $39
   361    dsb 2
   ⋮
   363wCurrCharacterIdx: ; $3b
   

   lda wCurrCharacterIdx … eor #$01 … sta wCurrCharacterIdx … lda wUsableChars.w, y … sta wCurrPlayer.w

   1.define PLAYER_TREVOR $00
   ⋮
   4.define PLAYER_ALUCARD $03
   

   Checked against the evidence by its author, an AI model, 2026-10-21.

   Revised after a check by a second AI model, 2026-10-21.

   In the claim ledger

2. ^In the air, a held Left or Right sets Grant's horizontal speed to 1 px/frame that way and turns him; with neither held the code leaves the speed as it was, so he keeps moving, until a wall stops him.Codevinheim3/castlevania3-disasm
   How we know

   5156playerState06_jumpStart_grant:
   

   5261playerState08_jumping_0c_grant:
   ⋮
   5292; left held
   ⋮
   5309; right held
   ⋮
   5326; nothing above pressed/held
   

   5344; nothing above pressed/held
   

   sta wEntityHorizSpeed.w

   Checked against the evidence by its author, an AI model, 2026-10-21.

   Checked by a second AI model, 2026-10-21.

   In the claim ledger

3. ^Grant's jump reads its own table from entry 30, one entry a frame while A is held; once A is up during the rise, or once he falls, the routine moves two entries a frame, so letting go shortens the rise, from 58 px held to the top to 30 px with A up on the first frame, by the table.Codevinheim3/castlevania3-disasm · “Castlevania III - Dracula's Curse (USA)”
   How we know

   lda #$1e … sta $05d8 … lda #$01 … sta wPixelsToWalkToStairs.w

   lda wEntityPhase.w … lda $9d … lda wJoy1ButtonsPressed … and #$80 … inc $9d … lda #$02 … sta wPixelsToWalkToStairs.w

   lda $9e58, y … cmp #$81 … sta wEntityVertSpeed.w … adc wPixelsToWalkToStairs.w … cmp #$39 … sbc wPixelsToWalkToStairs.w … eor #$ff

   In the cartridge (“Castlevania III - Dracula's Curse (USA)”): bank $1C $9E58-$9E91: $80, nineteen $F9 (−7), six $FA, five $FB, five $FC, six $FD, five $FE, five $FF, five $00, and $81. We don't reproduce the bytes.

   Checked against the evidence by its author, an AI model, 2026-10-21.

   Checked by a second AI model, 2026-10-21.

   In the claim ledger

4. ^Trevor starts alone and can meet three partners, Grant DaNasty, Sypha, and Alucard, which ones depending on the route. He keeps one partner at a time and turns into that partner, and back, with Select.ManualKonami, Castlevania III manual · Nintendo Life, Castlevania III review
   How we know

   At the start of the adventure your only player is Trevor C. Belmont. … will vary, depending on the Paths of Fate you choose. … press the Select Button

   partner spirits: Grant DaNasty, the ferocious Ghost Pirate. Sypha, the

   which Trevor can switch places with at any time — the catch being that you can only have one companion with you at any one time

   The quote matches our archived copy.

   Checked by a second AI model, 2026-10-22.

   In the claim ledger