Yami-Bakura-18

Yami-Bakura-18 is Ri Dae-Jung‘s username for TT10 Instant Message and hacker name.

Ri Dae-Jung uses English on the messenger as opposed to Russian or Korean, Ri Dae-Jung is known for his aggressive nature on chat and hacking.

Origin of name.
The name is derived from the Yu-Gi-Oh! character of the same name and his Blood Soldier Ops number, 18.

Yami Bakura was also Ri Dae-Jung’s subject name when Toshio tested him and Mark for psychopathy.