I couldn’t verify an exact boss spawn time for Roblox Battle Pets from the available info, but the game clearly features boss content and gameplay guides, including a recent Battle Pets guide and a Battle Pets boss video from 2026.

What I can say

  • I found Battle Pets guides and boss-related content, but not a confirmed schedule for when the boss appears.
  • If you mean a specific boss, spawn timing in Roblox pet/boss games is often tied to an area, quest, or update rather than a fixed real-world clock.

Best guess

  • The boss may be event-based, location-based, or update-based instead of coming in at a set time.
  • If you’re asking about a raid-style boss, the most likely answer is that it appears after meeting in-game conditions rather than by the hour.

Quick note

  • If you share the boss name or the island/area, I can narrow it down much more accurately.