Avalugg is clearly not a viable OU mon with its terrible defensive typing. Ice is probably the worst defensive typing out there only getting one resist and four weaknesses. That just does not cut it for a defensive wall in the OU metagame. There are just too many good fire and fighting types and he is not capable of taking any special attacks except for an ice beam. Even less bulkier pokemon like excadrill are much better at spinning away hazards because of its ability to switch in on more diverse attacks. If the opponent has any special attacker out there at all, you can't hope to spin because you either will get OHKOd or sacrifice yourself while spinning.
Honestly, I'm worried it will even b e viable in UU with the amount of powerful fire and fighting pokemon in the tier. He also faces stiff competition from blastoise, hitmontop, and tentacruel as bulky rapid spinners.
People look at that juicy defensive stat and think he will be the defensive wall to end all walls. In reality, typing is more important.
Honestly, I'm worried it will even b e viable in UU with the amount of powerful fire and fighting pokemon in the tier. He also faces stiff competition from blastoise, hitmontop, and tentacruel as bulky rapid spinners.
People look at that juicy defensive stat and think he will be the defensive wall to end all walls. In reality, typing is more important.