
Quick answer — Masato Obara voices Randy in Lupin the IIIrd: Fujiko's Lie, Araya Kawakami in Blade of the Immortal (ONA), Holmes in LUPIN THE 3rd PART 6 and 1 more characters.
Masato Obara voices Randy (Lupin the IIIrd: Fujiko's Lie), Araya Kawakami (Blade of the Immortal (ONA)), Holmes (LUPIN THE 3rd PART 6), Seiichirou's Father (SANRIO BOYS).
Randy is voiced in Japanese by Masato Obara.