I finished Death Parade a while ago and I'm bored, so I was looking up the voice actors. So here's what I found.

(These only include the Japanese voice actors)
(These are only for things I have watched, so when someone yells at me for not putting Free! in there, too bad. I haven't watched it yet.)

Ginti's voice actor also voices
•Reiner, Attack on Titan
•Tokoyami, My Hero Academia
• one of the voice boxes for Robin, Fire Emblem Awakening/Heroes/Fates
• M!Morgan, Fire Emblem Awakening/Heroes
• Shigure, Fires Emblem Fates/Heroes

Decim's voice actor also voices
•Son Hak, Yona of the Dawn

The Black-Haired Woman's voice actor also voices
•Linde, Fire Emblem Heroes/Warriors

Quin's voice actor also voices
•some Pokémon
•Yulier, SAO

And I'm too lazy to find other stuff