Avril functions as an automaton bound by absolute obedience to Aberdeen Roland's directives. Her physical capabilities encompass disarming opponents bare-handed and moving at exceptional speeds, augmented by advanced manipulation capabilities for the Eru (Ale) energy stored within her system.

Initially deployed as an antagonist, she assists Aberdeen in his mission to secure Minette's core. This objective arises from Aberdeen's intent to use the core to save his sister Miriam, who suffers from a terminal condition and exists as an automaton housing a human spirit. Avril's actions during this conflict highlight her combat prowess and unwavering loyalty to Aberdeen's cause.

A pivotal development occurs when Aberdeen abandons his antagonistic methods, revealing his motivations. Following this, Avril aligns with the Oasis clan, transitioning from adversary to ally. This alignment is established once the shared goal of preserving both Minette and Miriam's lives eliminates the need for conflict over the core.

Her operational parameters and emotional capacity remain defined solely by her functional obedience and combat specialization.