- Localized Name: Alvin (Alfred Vint Svent)
- JP Romanized: Alvin (Alfred Vint Svent)
- JP: アルヴィン (Aruvin) / アルフレド・ヴィント・スヴェント (Alfuredo Vinto Suvento)
- Gender: Male
- Age: 27 years old
- Height: 182 cm
- Designed by: Kosuke Fujishima
- Race: Human
- Weapon: Sword and Gun
- Voice Actor:
- JP: Tomokazu Sugita
- English: Matthew Mercer
Alvin is a native of Elympios who has spent much of his life stranded in Rieze Maxia. Following the destruction of the schism, he and Yurgen have begun a business selling fresh Rieze Maxian fruit to vendors in Elympios. They are hoping to ultimately build stronger ties between the two worlds through commerce. Alvin encounters Ludger at the Helioborg Research Station, which has come under attack by members of Exodus, a terrorist organization that Alvin once belonged to when he was trapped in Rieze Maxia. Since Alvin's cousin Balan is one of the hostages trapped in the research station, Alvin convinces Ludger to let him help.
Alvin is a smooth talking businessman who enjoys teasing his friends and often has trouble getting people to trust him. He spent most of his life working as a double agent and switching sides whenever convenient, but now he is trying to run a legitimate business. His character chapters largely focus on his struggles with loyalty when faced with distrust.