The Inorganic Angel Rosiel is the younger twin of Alexiel. Originally, he was wise, kind and benevolent, but knew he would eventually lose his sanity and become destructive. He asked Alexiel to kill him before this happened, but her feelings prevented her from doing so and she sealed him within the earth instead. He is also obsessed with his beauty; because everyone calls him beautiful (save for Alexiel), he frequently asks if he is beautiful as he descends further into insanity. In fact, he intentionally mimics many of Alexiel&#039;s facial features, which explains his resemblance to his sister. In reality, Rosiel was born as an old, hideous creature. His body doesn&#039;t age; instead, it becomes younger and younger as time goes by. Rosiel&#039;s most loyal follower Katan secretly uses forbidden black magic to break the seal and brings Rosiel back. By this time, Rosiel has already lost his mind.

Why is Setsuna so mixed up? Despite his attempts to be noble, he'll fight anyone anytime; he ignores all authority; and he harbors feelings for his sister that can only be described as "incestuous." Why is he such a mess? The reason may be found with two demons from the underworld and their enemy, an insane angel who is distributing an insidious computer game called Angel Santuary.
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(Source: Viz Media)

Mudou Setsuna, a high school student, loves his sister in a way that he shouldn't. He also struggles from supernatural powers. Angels and demons flocks to him as the day of his awakening draws near &mdash;he is the angel Alexiel, the highest angel which fought against God, reborn. 

__Chronology:__ (1994) B.A. from Williams College, Theater; (1997) M.F.A. from OHC School of the Arts, Columbia University 
__Favorites:__ 
- Anime Character Played: Tsume from _Wolf's Rain_ 
- Anime Character: Allen Schezar 
- Anime Series: _Laputa: Castle in the Sky_, _Macross Plus_, _Princess Mononoke_ (and most all Studio Ghibli films), _The Vision of Escaflowne_ 
- Authors: Hayao Miyazaki, J.R.R. Tolkein, Joseph Campbell, Marshall McLuhan, Osamu Tezuka, Shakespeare, William Gibson 
- Foods: Ben and Jerry's Ice Cream, Chicago Style Pizza, sushi 
- Hobbies: computers, mythology, radio theater, Sony Playstation, sound design

[Blog](http://susumu-chiba.jugem.jp/) | [Agency Profile](https://osawa-inc.co.jp/men/chibasusumu/)

His son, [Davide Chevalier](https://anilist.co/staff/96678), is an Italian voice actor too.