I couldn’t verify a reliable, current unlock method for Rainbow Knight in Piggy from the available results, and the search results I found mostly point to unrelated or different Piggy Knight skins/morphs rather than a clear Rainbow Knight guide.

What I found

  • One result mentions Rainbow Knight in a TikTok snippet, but it only says “discover tips” and does not give exact unlock steps.
  • Other results were for Knight Piggy , Knight Dakoda , or Rainbow Piggy , which are different items and could be easy to mix up.

Best next step

  • Double-check the exact item name in the game or on the badge/morph screen, because “Rainbow Knight” may be a nickname, a fan-made term, or a different skin entirely.
  • If you want, I can help you narrow it down by identifying whether you mean a badge, skin, morph, or a specific Piggy mode.

Quick note

If you already know the chapter or game mode where you saw it, that would make the answer much more precise.