Final Requests for Help

You said during CasualTom's stream that you hadn't worked out how to make Imp look different for Kappa. I say use an approach similar to the one that was used for the equipment: check for Kappa and fork if the result succeeds.

The graphic replacement code for Imp and Morph is in the C1 bank.

Code:

C1/2FB5:    BDBD2E      LDA $2EBD,X        (which status to display)
C1/2FB8:    2920        AND #$20        (is it imp?)
C1/2FBA:    F015        BEQ $2FD1        (branch if not)
***C1/2FBC:    B96C7B      LDA $7B6C,Y        (load character sprite ID ?)
***C1/2FBF:    C90F        CMP #$0F        (check if it's already imp ?)
***C1/2FC1:    F023        BEQ $2FE6        (branch if it'S the case)
***C1/2FC3:    A90F        LDA #$0F        (load imp sprite number)
***C1/2FC5:    996C7B      STA $7B6C,Y        (store as character sprite ID)
C1/2FC8:    205731      JSR $3157
C1/2FCB:    7B          TDC
C1/2FCC:    99707B      STA $7B70,Y
C1/2FCF:    8015        BRA $2FE6
C1/2FD1:    B96C7B      LDA $7B6C,Y        (load character sprite ID ?)
C1/2FD4:    DDAE2E      CMP $2EAE,X        (compare to battle sprite ID)
C1/2FD7:    F00D        BEQ $2FE6        (branch if both the same)
C1/2FD9:    BDAE2E      LDA $2EAE,X        (load battle sprite ID)
C1/2FDC:    996C7B      STA $7B6C,Y        (store as character sprite ID)
C1/2FDF:    205731      JSR $3157
C1/2FE2:    7B          TDC

The starred lines are where you'll want to look. A subroutine that checks $2EC6,X against $0E and branches if successful (loading #$12 instead of #$0F, with otherwise identical code) should do the trick. Thankfully in this situation we shouldn't have to fight to get a specific X back into place, since 2EC6 is in the same Battle RAM block as $2EBD.