As nouns the difference between bolt and pikachu

is that bolt is a (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw while Pikachu is a member of a small yellow mouse-like Pokémon species that has red cheeks and a tail shaped like a lightning bolt, and is able to control electricity.

As a verb bolt

is to connect or assemble pieces using a bolt.

As an adverb bolt

is suddenly; straight; unbendingly.

As a proper noun Bolt

is {{surname|from=nicknames}.