imperturbable (adjective)

1. Even in the face of danger, the imperturbable gods of Olympus remained calm and composed.

2. Why did the imperturbable teacher bring a ladder to the classroom? Because he kept setting the bar higher and higher!

3. In the cartoon, the imperturbable character always maintains his cool, no matter what crazy situations he finds himself in.

4. The imperturbable wizard easily brushed off the insults from his enemies with a wave of his hand.