Gameboy Burai Fighter Deluxe Japanese version

[asasega]

Invincible
49FE 3E03(ld a,03) replace with C900(ret nop)
1CB2 3E03(ld a,03) replace with C900(ret nop)

[Hybrid]

changing
4A00 EA D7 E0 ld (C0D7),a
to
4A00 FA D7 E0 ld a, (C0D7)

and in the other spot too
you get the same effect and only need two codes for it