Ikasama is a gambler mouse proficient in fraud and deception, habitually carrying dice that reflect his gambling lifestyle. His exceptional speed and agility earn him the nickname "swift runner," proving valuable for missions. Primarily self-serving, he prioritizes personal survival and opportunistic gains, often employing manipulative or evasive tactics when threatened. He encounters Gamba and Bobo at a harbor and joins their voyage with other sailor mice, where his skills provide strategic advantages. Against the Noroi Clan, his swift running aids in reconnaissance, escapes, and tactical engagements, and he participates in defending Yumemishima Island and its mouse inhabitants from Noroi's weasel invasion. While retaining his roguish demeanor, he gradually integrates into the team dynamic, with shared hardships solidifying his loyalty to Gamba's cause. This character and his core traits remain consistent across adaptations, including the original 1975 series and the 2015 3D CG remake, with his role unchanged as part of Gamba's core group and no significant alterations in spin-offs or other official media.