Around the corner came a huge robot.

Is the subject robot
Is the verb came?

Yes and yes.

Yes, in the given sentence "Around the corner came a huge robot," the subject is "robot" and the verb is "came." The subject of a sentence generally refers to the person, thing, or entity that performs the action of the verb, in this case, the robot. The verb, on the other hand, shows the action or state of being of the subject, which in this case is "came" indicating the movement of the robot.