Stone man awakened from sleep.

Bastion of StoneGrock gains a Shield equal to 14% of his Max HP and empowers the next Basic Attack to deal Physical Damage equal to 4 (+2% Total Physical Defense)% of the target's Max HP (capped at 300(+20*Hero Level) against non-hero units). This effect has a 18-12s cooldown (decreases with level), which reduces by 200% when near terrain. Grock gains Control Immunity while casting skills and 30(+6*Hero Level)% extra Physical Defense while the Shield is active.
Grock works well against heroes who cannot Blink over his wall, to escape his CC, such as Gord and Layla.
Grock is countered by Magic Damage heroes with Blink, who can kite him with relative ease, such as Kimmy and Harley.