Bulbous G is one of the Hollows who came to the Human World following Uryuu Ishida's bait, during the Agent of the Shinigami arc. He chased Yasutora Sado and Karin Kurosaki and was subsequently defeated by Sado.  (Source: Bleach Wikia)

Ichigo Kurosaki is a rather normal high school student apart from the fact he has the ability to see ghosts. This ability never impacted his life in a major way until the day he encounters the Shinigami Kuchiki Rukia, who saves him and his family's lives from a Hollow, a corrupt spirit that devours human souls. 
 
Wounded during the fight against the Hollow, Rukia chooses the only option available to defeat the monster and passes her Shinigami powers to Ichigo. Now forced to act as a substitute until Rukia recovers, Ichigo hunts down the Hollows that plague his town.

[Profile (Aoni)](https://www.aoni.co.jp/search/egawa-hisao.html)

Ichigo Kurosaki has always been able to see ghosts, but this ability doesn't change his life nearly as much as his close encounter with Rukia Kuchiki, a Soul Reaper and member of the mysterious Soul Society. While fighting a Hollow, an evil spirit that preys on humans who display psychic energy, Rukia attempts to lend Ichigo some of her powers so that he can save his family; but much to her surprise, Ichigo absorbs every last drop of her energy. Now a full-fledged Soul Reaper himself, Ichigo quickly learns that the world he inhabits is one full of dangerous spirits and, along with Rukia— who is slowly regaining her powers— it's Ichigo's job to protect the innocent from Hollows and help the spirits themselves find peace. 
(Source: Viz Media) 
Note: Chapter count includes the 12-chapter “Turn Back The Pendulum” side story and 8 extra chapters.