Astro Birthday — Dandy's World
Birthday = release date (first appearance). Verified from the official wiki's infobox release_date field — no guesses.
birthday is June 14, 2024 — the original Alpha launch day, shared by the whole launch roster. Zodiac: Gemini. Age: 2 (as of 2026). Full name: N/A.
He's a Main Character (M-002) and the community's S-tier survival/support pick: 5★ Stealth (highest in game), Nap Time active restores teammates' stamina, and he's the only Main with no Mastery requirement (5,000 Ichor + 100% Twisted Astro Research).