Breather Boss

4 vs. Satan:
*The plant is one of the few later bosses that doesn't take forever to beat. Plus, you likely have paralyze protection.
Alex in Princess Quest:
*NONE
The Stone of Power:
*NONE
The Three Kingdoms
*NONE
Dragondawn
*The ogre. He's one of the few bosses who doesn't use powerful spells on the heroes. In the main game he's also defeated surprisingly quickly.
*In "Advanced Mode": The crab (1.0 version), Daniel, the ogre and the two dragon guardians still aren't too hard to beat.
Harter Knall
*NONE
Hero Story
*The thug. Even if you have only two heroes, he's defeated rather quickly.
Kill the Demons
*NONE
Satan Saga
*NONE
Story of Hero:
*NONE
The Legend of Devils
*NONE
The Sidestory Duology:
*NONE
The Time Of Bloody Fear:
*NONE