Vibhishana originates from the ancient Indian epic Ramayana as a noble Rakshasa demon who opposed his brother Ravana and allied with the hero Rama. Following Rama's victory, Vibhishana became king of Lanka. This mythological background informs his portrayal as a figure associated with wisdom and a desire for order.

In the *Shin Megami Tensei: DeviChil* anime adaptation, Vibhishana emerges as a primary antagonist after Lucifer's defeat. He forms a trio with Demogorgon and Paimon, seeking control of the Demon World ("Expanse" or "Makai") and manipulating other demons to achieve dominance. His characterization emphasizes strategic intellect alongside an abrasive demeanor toward allies and peers.

Vibhishana's role escalates during the second story arc as part of a "Big Bad Ensemble" with Demogorgon and Paimon. Their collective goal involves destabilizing both the human and demon worlds, leveraging Vibhishana's tactical acumen to coordinate attacks. Internal discord plagues their alliance, resulting in Vibhishana's abandonment by Demogorgon and Paimon. This betrayal culminates in his death during episode 40, framed as a consequence of entrenched hatred and treachery.

Outside the anime, Vibhishana appears in *Devil Children* game lore as the leader of the Rasetsu tribe, initially competing for rulership of Marble Land. He expresses surprise when his wisdom proves insufficient in battle and later opposes the protagonists' abdication of authority. His game profile describes him as a "wise and benevolent demon that fights for the cause of peace," contrasting with his antagonistic anime depiction. Stats and skills across titles like *Black Book*, *Red Book*, and *DemiKids* consistently highlight wind/wood-based attacks such as *Zanma* and *Cycloburst*, alongside supportive abilities like healing or luck enhancement.