I think H-Hyde is either Hybrid Hyde which could be Hyde injected with HNA or monster HNA to be precise.
It could also stand for Hell Hyde which can also be a reference to a movie or just Hyde himself engulfed in fire.
Hell-Hyde is a hunter who was a former chem trooper, now he is a monster consumed and engulfed in fire burning and leaving trails of fire turning everything around him to ashes.
Profaned flame thrower- This is Hell Hydes primary weapon that does a lot of damage, but it also sets the surroundings on fire damaging both monster and teammates that walk into the fire coated area.
Overheated minigun- Hell Hydes secondary weapon that fires bullets engulfed in flames damaging and burning the monster.
Wild fire- A grenade that explodes upon landing does damage to the monster and leaves fire in the area the grenade landed, monsters or hunters that are in the fire will be burned.
Cataclysmic fire- Hell Hyde when using this ability abruptly detonates setting himself and his surrounding area on fire causing DOT and initial damage on himself for the duration of the ability, but in exchange he becomes very destructive engulfing everything around him in fire.
His weapons get boosted in this state dealing more damage and spreads the fire even more. His damage reduction is very low, but any monster that tries to attack Hell Hyde in this state will be burned upon hitting him with melee. Though any ally too close to him will get burned as well.
I think @ToiletWraith might like a Hell-Hyde idea because of this.