Just a quick analysis of viable haze users. Do with it what you will.
Steel Articuno:
Weaknesses: Fighting, Rock, Electric,
Fire (4)
Neutralities: Steel, Dark, Ghost, Water (4)
Resistances: Normal, Flying, Fairy, Ice, Psychic, Dragon,
Bug,
Grass (8)
Immunities: Ground, Poison (2)
Pros:
Has good bulk. 90/100/125
Decent speed(85) and Sp. Atk(95).
Gets Haze, Roost, Defog,
Heal Bell, Toxic, U-Turn and even Freeze Dry.
Cons:
Doesn't get Will-O-Wisp, Scald or any way of spreading burns.
Weak to four very common attacking types. And the 4x Fire weakness is terrible.
Steel Mantine:
Weaknesses: Electric (1)
Neutralities: Fighting, Fire, Rock, Dark, Ghost (5)
Resistances: Normal, Flying, Fairy, Ice,
Steel, Grass,
Bug, Psychic, Dragon (9)
Immunities: Ground, Poison, Water (3)
Pros:
140 base Sp.Def.
It gets Scald/Defog/Haze/Toxic/Confuse Ray and Mirror Coat.
Only 1 weakness.
Water
Cons:
No reliable recovery.
65/70 HP/Def is bad.
Electric weakness is terrible.
Steel Milotic:
Weaknesses: Electric, Fighting, Ground (3)
Neutralities: Fire, Grass, Dark, Ghost (4)
Resistances: Bug, Dragon, Fairy, Flying,
Ice, Normal, Psychic, Rock,
Steel, Water (10)
Immunities: Poison (1)
Pros:
More HP and defence than Mantine at the cost of a little Sp. Def. 95/79/125
Recover/Haze/Scald/Mirror Coat/Magic Coat/Rest/Sleep Talk/Toxic
Can utilize Rest+Sleep Talk to take advantage of its ability. (
Marvel Scale: If this Pokemon is statused, its Defense is 1.5x.)
No 4x weakness.
Cons:
3 weaknesses and only 1 immunity
Cannot clean hazards
Steel Vaporeon:
Weaknesses: Electric, Fighting, Ground (3)
Neutralities: Fire, Grass, Dark, Ghost (4)
Resistances: Bug, Dragon, Fairy, Flying,
Ice, Normal, Psychic, Rock,
Steel, Water (10)
Immunities: Poison (1)
Pros:130/60/110 makes it the best special wall, looking at stats alone.
Haze/
Acid Armour/Scald/Wish/Protect/Refresh/Toxic
Can use the annoying combination of Toxic/Wish/Protect.
Cons:Cannot clean hazards
.Same typing issues as Milotic.
Toxic/Wish/Protect isn't that great due to all the steel types in the tier.
Steel Tentacruel:
Weaknesses: Electric,
Ground (2)
Neutralities: Fighting, Fire, Dark, Psychic, Ghost (5)
Resistances: Bug,
Fairy,
Ice,
Steel, Water, Normal, Flying, Grass, Rock, Dragon (10)
Immunities: Poison (1)
Pros:
80/65/120
Only two weaknesses.
Gets
Rapid Spin,
Acid Spray, Haze,
Knock Off, Mirror Coat, Magic Coat, Scald, Toxic and
Toxic Spikes
Base 100 speed is pretty surprising. Too bad it doesn't get Taunt.
Cons:
Terrible 4x ground weakness
No recovery
Steel Quagsire:
Weaknesses: Grass, Fighting, Ground
Neutrality: Fire, Water, Dark, Ghost
Resistances: Rock,
Steel, Normal, Flying, Fairy, Ice, Bug, Psychic, Dragon
Immunities: Electric, Poison (Water also if for some reason you decide to run Water Absorb instead of Unaware)
Pros:
95/85/65
Very good ability in Unaware.
Haze/Acid Spray/Amnesia/Recover/Scald/Toxic/Earthquake
Cons:
It's a defensive wall not a special wall so pretty much any special attacker can kill it.