The minting 10,000 NFTs was a fully on-chain process thanks to the use of Chainlink VRF. This guaranteed that every Luchador was minted without post-reveal or rarity manipulation. Each Luchador has 100% on-chain SVG art + metadata, so they will always exist on the Ethereum blockchain. However, to reduce the gas-costs, tokenomics and gameplay mechanics will be on Polygon so these Luchadores can battle for as long as the blockchain stands.