Wellie/Welly functions as a magical companion to Ixia Jun, a mage in the main adventuring group. This sentient magic rod serves as both Ixia's spellcasting tool and a familiar accompanying her on travels across the Arad continent. Wellie joins other small companions within the party, including Plohen (a small white head residing in Ixia's hat) and Capecho (a robot companion belonging to Capensis).

No details are provided regarding Wellie/Welly's background, origin, personality traits, character development, or specific actions. The character appears only through association with Ixia Jun and inclusion among the party's magical companions.

Information about appearances or development in other media such as movies, OVAs, spin-offs, or alternative seasons is unavailable within the provided sources.