Hello everyone and welcome to my discussion on the Nemesis Lucifire, and the comparison between her 3 forms.
General Analysis: Lucifire is an attacker that focuses on high Base Powered moves that are backed up by deny effects, Ignite or Burn. She is immune to Burning and Freeze (which is very underwhelming). She also has some moves that apply Blind and Damage Reduction, and these moves remove buffs from their target too. Lifemelter is hopelessly outclassed by the other two, so forget about getting her.
Comparison Between Hopefreezer and Helltaser: Hopefreezer has higher damage and can slam Fire monsters hard. She uses Freeze as a deny effect. Helltaser is faster and can defeat Water monsters more easily, but she has very slightly lower damage. She uses Stun as a deny effect.
Conclusion: This depends on what kind of environment Lucifire is in. Both Helltaser and Hopefreezer can do significant damage and apply pressure to their enemies. However, in general I feel like Helltaser wins because she sits at a crucial Speed tier of 3465, giving her the edge against monsters like Warmaster Gortak and Draghar.