[Doom](WIP) Cursed Hell : Cursed Imp & Zombiemen

Because 6 months of web designing education was ended recently, I restarted making my Doom mod.
This is Cursed Imp and Cursed ZombieMan, a part of Cursed Hell, my Doom mod in progress.
I introduced Cursed Hell by two videos of Headless Baron and Hellknight.
• [DOOM] DECORATE practi... (the first reveal) / • [DOOM] DECORATE practi... (transformation test)
Cursed Imp's ball deals less damage than original Imp's fireball when struck directly, but it makes six black smokes when explode. Those black smokes block player's sight and inflict small curse damages to nearby creatures, if you are exposed to direct hit and additional 6 smokes, they can make max damage higher than direct hit of original imp fireball.
Cursed Zombieman... has no special ability compared to original zombieman except common stats of cursed monsters. However, hitscan attacks of Cursed Zombiemen have 'curse' damagetypes, and Cursed Zombiemen are immune to curse type damage, so they will not provoke monster infighting so easily unlike original zombiemen and other zombie marines.
And in common, all cursed monsters(except Cursed Souls themselves) spit 'Cursed Soul's when they die. Cursed Souls are Cursed version of Lost Souls as their name suggests, they are less aggressive than original Lost Souls, but they can raise dead monsters by cost of their lives.(So, they can be considered as disposable Archvile who don't attack player) So if you don't treat Cursed Souls well, cursed monsters can be infinitely revived by Cursed Souls summoned by themselves.
I'm thinking about cursed versions of other monsters, how can I reinforce them without ruining their basic concepts...