Slowbro

Type Tier
Water / Psychic BL
Statistics
Stat
HP
95
393
Atk
75
248
Def
110
318
SpA
100
298
SpD
80
258
Spe
30
158
Name Item

Basic Slowbro

Leftovers
Moveset
~ Surf
~ Psychic
~ Thunder Wave
~ Rest

This is just a basic Slowbro set. Slowbro is arguably the best Thunder Waver in the game with the low Speed and high Defense. Surf and Psychic both get STAB and do nicely from 298 Special Attack. Psychic also makes Slowbro a pretty decent answer to Tentacruel. When you are low on health, Rest up—Slowbro can easily survive the Rest.

Other Options

Slowbro has a bunch of them. Slowbro learns other good attacks like Fire Blast, Ice Beam, and even DynamicPunch for Blissey and Snorlax. Zap Cannon is also cool for dealing loads of damage to other Water-types (Starmie in particular) while still being able to paralyze the opponent. With his high HP and Defense, Counter is another viable option—Slowbro can take a lot of hard hits, even with a Curse or two. And if you're a hardcore staller, Growl can be a pain for Cursers.

Opinion

Definitely one of the best Water-types in the game. It's one of the few Waters that can take a licking and keep on ticking, and it also has good stats. Lack of Speed is made up for with Thunder Wave, and it has a better movepool than the other high-defense Water, Suicune. It's also very cool and is always a decent option for a Water-type.

Counters

Slowbro is a bit difficult to KO quickly due to its high defenses, but Electric-types are definitely the best bet. Especially powerful ones with healing are the best to use; these include Raikou and Zapdos. Snorlax Curses up with reckless abandon against Slowbro's Surfs. Starmie's Thunderbolt also works to wear Slowbro down while Starmie itself takes almost nothing due to resistance to Water and Psychic, and it heals off what little damage it takes with Recover. Exeggutor has no real healing, but a super effective Giga Drain will maintain its health.