Stroke, also called a brain attack, happens when the arteries leading to the brain are blocked or rupture. When the brain does not receive the needed oxygen supply, the brain cells begin to die. A stroke can cause paralysis, inability to talk, inability to understand, and other conditions brought on by brain damage. Strokes kill nearly 150000 Americans each year and are the leading cause of adult disability.
Grimlock is the most fearsome and powerful member of the Dinobots. Grimlock can be cold, merciless and contemptuous of those he considers beneath him, such as human beings, and at times, even Autobot leader Optimus Prime himself, who Grimlock would gladly supplant as Autobot leader if he were able, suggesting he has a superiority complex
