Hephaestus holds the divine domains of metals and science. Visually, he is marked by a missing right eye, habitually concealed beneath a pirate-style bandage. His demeanor presents as unintelligent yet sympathetic. A pronounced dislike colors his view of other male gods, with Apollo being a particular target of resentment; this stems from Apollo's perceived physical perfection contrasting sharply with Hephaestus's own self-image.

He is married to Aphrodite, goddess of beauty, and is the father of Eros. Their family life reveals strain: Eros pointedly avoids addressing him as "father," using only his name instead. Aphrodite displays ambivalence towards their son, fluctuating between moments of care and expressions of shame regarding Eros's appearance. His scientific pursuits involve crafting potions and inventions. However, these creations frequently malfunction or worsen situations when employed by others during their quests.

Within the narrative's events, Hephaestus operates a workshop dedicated to metalworking and technological experimentation. His interactions with Pollon and Eros occur during their adventures, where his interventions or devices consistently contribute to chaotic outcomes.