is a talented young boy and first class vigilante
, Carl has brought many criminals to justice with the aid of his mysterious doll Deus Machina: Nirvana
, which he believes to be his elder sister, Ada Clover
. Carl heads to the 13th Hierarchical City of Kagutsuchi
to retrieve the bounty for Ragna the Bloodedge
. He is a former classmate of Noel Vermillion
, Jin Kisaragi
, Makoto Nanaya
, and Tsubaki Yayoi
when they were in the Military Academy, but he dropped out. Carl wants to get revenge on his father Relius Clover
, for what he did to Carl's older sister, Ada. In some part of his story, Carl meets Bang Shishigami
, and Bang calls him his "cute little disciple".
In BlazBlue: Continuum Shift, he follows Ragna the Bloodedge to find out what he is looking for, and seems to have memories of his sister being destroyed from one of the other timelines. Hazama and Nirvana remember each other from the Dark War, hence the reason she attacks him on sight.
In his Story Mode, Carl has seemingly taken a sort of drug that made him increasingly violent, especially in his pursuit of Relius, turning down even Bang, who has helped him recover after being knocked out by Ragna, and even called him out for attacking Noel out of blue. His pursuit led him to the Librarium
headquarters, whereas he encounters Litchi Faye-Ling
, presumably after joining NOL. This infuriates Carl even further, as he thought that she's just the same as other adults and his father, discarding their goodness for their own self-desires, and her sincerity is a fake one. After attacking her, the drug's effect wore off, and he started breaking down in tears. However, Litchi managed to comfort him, and restored his self-esteem and view towards adults.