Velzeb serves as a primary operative of the Jaaku Empire alongside Belzeb and Taida under Emperor Warusa. This small, fairy-like entity physically resides within Belzeb's chest cavity. Initially receiving less narrative focus than the other generals, Velzeb displays less distinct personality early in the conflict against the Earth Defense Class.

A key development occurs when Velzeb embarks on a reconnaissance mission to find the Earth Defense Class base. Becoming separated and lost in town, Velzeb hides within the hair of Jin Hyuga, a Raijin-Oh pilot, to evade detection. While concealed, Velzeb deliberately orchestrates minor disturbances and phenomena around Jin, causing him to mistakenly believe he has developed sudden psychic abilities. This incident reveals increased initiative and a previously less visible mischievous aspect of Velzeb's personality.

Velzeb operates within the Jaaku Empire's command structure, experiencing pressure alongside Belzeb and Taida due to repeated failures against the Earth Defense Class and in conquering Earth. These failures risk Emperor Warusa deeming them expendable, motivating Velzeb and the others to intensify efforts, including prioritizing identifying their opponents and locating their base through direct reconnaissance. Velzeb's capabilities include operating independently outside Belzeb, demonstrated primarily through stealth and minor trickery rather than overt power.