Quick answer
Pikachu is a boy name.
Pronunciation: English /ˈpiː.kə.t͡ʃu/.
Meaning and history
From Japanese ピカチュウ (Pikachuu), derived from the onomatopoeic words ピカピカ (pikapika), a sparkly sound, and チュウチュウ (chuuchuu), a mouse sound. This is the name of a Pokémon, a yellow rodent-like creature who can summon electricity, from a series of video games starting 1996. This is technically the name of the species, though it is used as a given name for the creature in some contexts.
Notes and context
Usage: popular culture | Japanese Katakana: ピカチュウ