More suited to the comforts of the lightless ocean canyons, Slardar surfaces only to scout, and to track down those who have thieved from the Sunken Treasury. Born under the immense pressure of the deep, he Guardian Sprints with one muscular tail, chasing down legged foes with alarming swiftness. Ever vigilant in his duties, Slardar casts a Corrosive Haze over hidden intruders, revealing their form and softening their armor. Once discovered, there was little time to react. Slardar smashes the ground with a Slithereen Crush, dazing nearby enemies just long enough to pulverize them with Bash of the Deep.
With the 7.00 gameplay update, three of Slardar's abilities have been renamed: 衝刺 to 守衛衝刺, 重擊 to 深海重擊, and 傷害加深 to 侵蝕霧靄.
Slardar's voice line ▶️ "The last…of the old guard." is a quote by Viggo Tarasov to Marcus just before killing him in the movie John Wick (2014).
Slardar's voice lines ▶️ "That is not dead that can eternal lie." and ▶️ "And with strange aeons even death may die." are direct quotes from H. P. Lovecraft's short story The Nameless City.
Another Lovecraft story, The Shadow over Innsmouth is also referred several times in Slardar's backstory and voice files with mentions to "The Old Ones" and "The Deep Ones".
Slardar's model is based on the Naga from the Warcraft franchise.