Spooked

Tonight we had a thunderstorm, first rain for weeks, and it spooked our new cat. For several hours he disappeared hidden somewhere in the house. 
 
He still hasn’t got a name . Do we keep to Jo-jo, the name the Cat Rescue gave him or give him another. These are some of the names being considered: Garfield, Ollie, Jo-Jo, Prince Harry, Marmaduke, Teddy, and Rory.
 
What do you think?