Proto Soul

MegaMan.EXE performs Double Soul with ProtoMan.EXE by sacrificing a Sword-elemental chip in both MMBN4 and 5.

Abilities

 * Charging a non-dimming Sword chip will cause MegaMan to warp 2 steps forward before executing the chip attack at double damage.
 * Reflect: Pushing B + ← will put up a shield. If a non-Breaking attack hits the shield, the attack is negated and 50 damage is dealt to the nearest enemy down the row. Other Navicust programs that use B + ← will be overridden.
 * Charge Shot: WideSword (a regular WideSword that deals out 80 damage and in MMBN5, gains a 10 damage power boost for any additional levels to the Buster Power)
 * Bosses to use against:
 * ProtoMan.EXE: When he teleports to your area to attack, slice him.
 * ShadeMan.EXE: Same as above.
 * Weakness: The Proto Soul does not allow Program Advances to be charged, but most of the P.A.'s don't need it anyways. Also, the StepSword can leave MegaMan open to a Slasher, and any direct contact while using StepSword on an enemy will leave MegaMan injured. Also, Like Guts Soul, Proto Soul is very limited in range when it comes to the charge attack.

Competitive Play

 * Proto Soul tends to be used only by players who have mastered its Sword boost ability. This especially applies to those who have mastered the Variable Sword/Neo Variable input commands, which can cause especially high damage in a singe chip.
 * The MoonBlade series from BN5 also made Proto Soul more viable, since players can combine the Sword boost ability with these Battle Chips to execute the attack in the middle of the enemy area, making it nigh-impossible for the chip to miss.

[[File:CBluesEmo.PNG]] Chaos Soul
MegaMan's Charge Shot becomes a Dark Sword attack, hitting a 3 x 2 space for 400 damage in a fashion similar to the Life Sword Program Advance. With a single AreaGrab, the attack is capable of covering the entire enemy area, making it impossible to miss.

MegaMan NT Warrior Axess
MegaMan gains this soul during the battle with ShadeMan.EXE. As they are being pummeled by him, ProtoMan gives him the Soul to help him survive the battle as ProtoMan is too badly weakened by the Dark Chip to help. He uses this form to defeat Dr. Regal while he is Cross Fused.

Trivia

 * In Battle Network 4's Blue Moon version, MegaMan is able to Soul Unison with the DarkSword battlechip that appears during the ShadeMan fight provided he is not in a worried state. This is due to the Dark Chip appearing for story mode purposes.