|Japanese Voice||Kazuhiro Nakata|
|English Voice||Paul Mercier|
- "I fear now that avoiding conflict is not just a matter of turning off your terminal."
- — Bear —
Bear is a large burly BladeMaster. He wears relatively little armor, and most of his body and face is covered in blue wave tattoos.
Fairly easy going, Bear usually prefers to relax in The World. He acts as a sort of helper for newbies, and tries to give off an experienced air. When he does go adventuring he usually travels with either BT or Mimiru. He has the habit of quoting obscure authors to help make a point.
In the real world, Bear is a famous author and novelist named Ryo Sakuma. He is the author of the acclaimed novel "Annwn" and is in his mid forties. Divorced from his wife, he is constantly pestered by his adult son, Teddy in The World, with demands for money, demands that he usually gives into. Following the events of SIGN, he became a sort of adopted father to An Shoji, and is using his money to support her as she attends college.
Aside from playing The World, Bear enjoys reading books by famous authors, as well as writing books of his own. He is also a fan of the theater. He smokes as well.
At the beginning of the anime he feels curious about Tsukasa, and starts to investigate about him, then BT, who apparently met him in the real world and is in love with him, tells him not to involve with Tsukasa´s life unless he is willing to take responsability. So when he finds out about the real Tsukasa, the way her father had treated her during her life and how he would rather let her die than to keep her comatose, he offers Tsukasa the choice of adopting her once she wakes up.
Kite and Elk run into Bear at the bottom of a dungeon. Kite thinks he's Orca at first, but Bear says that he's not even close to being that famous. Bear introduces himself as a newbie helper, but says that players of their level really don't need his help. After staring at Elk for a bit, he admits that Elk reminds him of an old friend. As a token of their meeting Bear gives Kite his sword. Later he can be found wandering around the Root Towns; he has several rare items available to trade.
During Unison, Bear meets most of the SIGN cast and several of the game characters in a bar in Carmina Gadelica. He travels with them to Net Slum where Helba is hosting a party. There he dances with BT.
Bear is PKed by Orca at the beginning of GIFT, but since their avatars look so alike everybody assumes that it was Orca who was PKed instead. Bear finally catches up to Orca at Helba's hot springs, and the two begin a sword fight. After getting tired, they decide to stop the fight and relax in the springs. Orca admits that the only reason he killed Bear and tried to take his place was because he wanted to be a part of the plot for a little bit. Being the understanding person he is, Bear forgives Orca.
- Ryo's novel "Annwn" is erroneously referred to as "Annwyn" in the subtitles.