How much of Jericho's personality is unknown, only that his vengeance against Cassius turned him furious and overconfident. A fault that made him disbelieve anything but his own success until its too late when he contacted Nacht and Chloe in the luxury box, mistaking him for Cassius's kids. It was only after their arrest Jericho becomes infuriated to the limit after realizing the whole time, the Jesters were nothing but catspaw to divert Cassius away from Liberl by Ouroboros.
Following the aftermath of the Imperial BG Branches Attack Spree, Jericho and remaining Jesters stayed low with only one thing in mind, revenge against Cassius Bright. Forming a contract with the Nidhoggr corps, they planned a assassination attempt on Cassius by bombing the Queen's 61st Birthday Celebration for cover, and blending in as participants for the Martial Arts Tournament event. Unfortunately, Cassius knew about their vendetta and cleverly countered with Nacht Weiss's help and the rest of the army blending as the audience. The plan failed and the Jester remnants were arrested by the Royal Army and sent to Leiston Fortress. Jericho was then despairingly killed by Airi, when he refused to pay Nidhoggr their reward.
- He is the first Jester character to appear officially, other than Lorence Belgar who was just a fake identity.