If I send my ballence to metamask optimism wallet.... @beefyfinance

Yes, if you send your balance to a MetaMask Optimism wallet, you will need to use ETH to pay for transaction fees. This is because Optimism uses ETH as their gas, meaning that you will need to have ETH on the Optimism chain in order to complete the transaction. Trust Wallet also requires ETH for gas when sending Optimism coins, so it is important to make sure that you have enough ETH in your wallet in order to complete the transaction.

yes Optimism uses ETH as their gas

Optimism uses ETH for gas