Arctovish (Water/Ice) gets Slush Rush but its Speed is horrible and you're better off running Water Absorb or Ice Body to compliment its decent all around bulk. It gets Aurora Veil, Icy Wind, Super Fang, and Iron Defence for utility. Attack-wise, it gets Crunch, Icicle Crash, Rock Slide, Icicle Spear, Liquidation, Psychic Fangs, Iron Head, Stone Edge, and Zen Headbutt. It also gets a new move called Fishious Rend which sounds like a Water-Type Electroball but that just doubles its power if you are faster (which you won't be). It might be good in the low tiers (RU at best?).
Dracovish (Water/Dragon) gets access to 3 great abilities in Water Absorb, Strong Jaw, and Sand Rush. It has a base 75 Speed, which, while not great, could allow you to outspeed certain things. It also gets access to Crunch, Fishious Rend, Stone Edge, Psychic Fangs, Liquidation, Outrage, Iron Head, Zen Headbutt, Leech Life, Earthquake, and Low Kick. It would be a threat if it only got any set-up like DD, SD, or even Agility. No such luck though.
Arctozolt (Electric/Ice) is almost an exact copy of Arctovish stat and ability-wise, with its offenses and defense switched, while keeping that 55 base Speed. It gets Slush Rush, but its not worth running, so you're better off with Volt Absorb, or Static for the gimmick. Instead of Fishious Rend, you get Bolt Beak, which is an Electric version of the same move. Notable moves are Discharge, Icicle Crash, Wild Charge, Stone Edge, Iron Tail, Thunderbolt, Ice Beam, Stomping Tantrum, T-wave, and Icy Wind.
Finally, you have Dracozolt (Electric/Dragon). Similar stats to Dracovish, with slightly higher offenses as compared to defenses, and the same Speed. Volt Absorb and Sand Rush are good, but you can also run Hustle for the extra power. Notable moves are Aerial Ace, Dragon Tail, Discharge, Bolt Beak, Dragon Pulse, T-wave, Low Kick, Flamethrower, Fire Blast, Earthquake, Thunderbolt, Thunder, Outrage, Iron Tail, Dragon Claw, Earth Power, Stone Edge, and Wild Charge. This one seems to be the most viable on paper. It's a crying shame it doesn't get any set-up or recovery.