Quick answer — Yuuji Iwahara worked on Clevatess (Original Creator), Darker than Black (Original Character Design), Darker than Black: Origins (Original Character Design) and 6 more anime.
Yuuji Iwahara worked on Clevatess (Original Creator), Darker than Black (Original Character Design), Darker than Black: Origins (Original Character Design), Darker than Black: Beneath Cherry Blossoms in Full Bloom (Original Character Design), Darker than Black: Gemini of the Meteor (Original Character Design), Dimension W (Original Creator), King of Thorn (Original Creator), SAKUGAN (Original Character Design) and 1 more.
