Marcel holds the role of Guardian of Greenery in the Shinchou Universe, embodying the element of greenery and abundance. He appears as a 14-year-old boy with long blonde hair and violet-blue eyes. He is cheerful and outgoing, displaying deep sensitivity particularly towards Sacrea energy, a cosmic force he inherently trusts due to his strong attunement to it.

In *Angelique: Shiroi Tsubasa no Memoir*, Marcel exhibits powerful protective instincts focused on Angelique Limoges, the Queen of the Sacred Bird Cosmos. When Arios, reborn yet corrupted by a dark entity, emerges as a threat, Marcel opposes imprisoning him. Instead, he assists Angelique in escaping with Arios to aid in restoring his memories, joining their journey to shield Arios from the suspicions of the other Guardians. During this mission, Marcel displays significant loyalty and courage, prioritizing Angelique's safety despite the dangers posed by the possessed Arios.

Marcel's relationship with Angelique carries deep emotional weight. He reacts with visible distress when she falls into comatose states, pleading for her recovery. Upon her revival, he shows profound relief and tearful joy, later revealing subtle romantic feelings through blushing when speaking about her. When Arios traps Angelique and Marcel within an energy confinement, Marcel endures captivity until the other Guardians secure their rescue. His actions consistently reflect his commitment to Angelique's well-being and his steadfast role as her supporter.

Throughout the broader *Angelique* franchise, Marcel remains the Guardian of Greenery/Abundance, retaining his core traits of sensitivity and optimism. His narrative role underscores his connection to natural forces and his unwavering dedication to protecting the Queen.