Slardar is a melee character. His primary attribute is strength. The hero is mainly taken as a hardlaner. Most effective in the mid and late game.
The Bash of the Deep and Slithereen Crush abilities help the hero control enemies. The character can be very efficient against armored heroes thanks to Corrosive Haze. Guardian Sprint gives Slardar the ability to chase or run away from a unit. With Aghanim's Shard, using Slithereen Crush will weaken all hit enemies, and with Aghanim's Scepter it will create a pool of water buffing Slardar.
Slardar is a Slithereen, one of the Deep Ones, guardian of a vast network of sunken cities and the ancient riches buried within them. Because he has spent his whole life at great pressure, under tremendous weight of the sea, Slardar the Slithereen Guard is a creature of immense power.