Célestin, a 5-star Geo catalyst character from Fontaine, is characterized by his imposing stature, intricate fashion, and a visionary but obsessive personality. His appearance includes deep charcoal-black hair and striking pale eyes adorned with architectural details, reinforcing his role as a sculptor. Célestin's combat abilities include normal attacks that unleash geometric keystones, a skill that summons a Gothic Pillar barrier dealing area damage and his elemental burst, Cathedral Aegis, which provides his allies with shields and enhances their attacks. Known for his demand for perfection, he exhibits a complex blend of grandiosity and hidden melancholy, fearing the erosion of his legacy and seeking to create lasting structures that embody his artistic vision.

Célestin is a character known for his mastery in architecture and alchemy, created by the Spire Syndicate from ancient materials. His constellations enhance his abilities, including generating shields and healing allies. Ascension requires various materials and Mora, while talent upgrades necessitate specific books and enemy drops. With base stats at level 90 showing high HP and DEF, Célestin's lore reveals his defiance against the Syndicate and affection for the Oceanids, culminating in a Vision that reflects his vision of order and beauty. His personality is characterized by a disdain for common materials, an emphasis on structural integrity, and an artistic perspective on architecture.

About Célestin: The load-bearing columns were ornamental, requiring secret reinforcement. Navia is described as a significant figure, with her father's memorial being a notable work. A compliment is given for a lack of structural failure, while emphasizing strength and support. The vision is integral to existence, guiding construction decisions based on the earth’s resonance. Fontaine buildings are intentionally designed to appear unstable as a form of aesthetic expression, which is remedied with elegant materials. Interesting fact: quartz can become a mirror under specific conditions. The "Ascension" phases describe a spiritual journey, with references to deepening foundations, increased strength, and a connection to the earth's resonance, culminating in a powerful self-identity as a monumental force.