Change Julius for Zero, Yoko for X and Alucard for Harpuia.
Zero have some of your weapons, saber, lance, shield, pistol etc
X attack have a close combat shoots and can shoot some projectiles
Harpuia attack with 2 blade for this make 2 damages for hit, also can fly
Zero can do a combo with Y+A+↓A/Y
Added Music songs from megaman series
Use Delta Patcher to apply the patch
Instructions:
Use xdeltapatcher for put the patch in your rom (USA) (No Intro)
Thanks for Playing my Hack
Database match: Castlevania - Dawn of Sorrow (USA)
Database: No-Intro: DS (all) (v. 20210227-111036)
File/ROM SHA-1: 47530FF87E608F88105A314FDF36DC385F8DEC94
File/ROM CRC32: 135737F6