Is nicknamed "Godzilla" because of his power-hitting. At the Tokyo Dome
gift shop, there is merchandise (T-shirts, coffee mugs, etc.) of
Godzilla in a Giants baseball shirt (with # 55, Matsui's number).
Matsui is also a Godzilla fan, and at the baseball games,
Akira Ifukube's
famous "Godzilla" theme is played when Matsui steps up to bat.