This chapter discusses the concept of MEV (Miner Extractable Value) bots and their role in optimizing efficiency in Ethereum markets. It explores how these bots rebalance and optimize pools and liquidity based on user transactions, and highlights the antagonistic relationship between on-chain decks trades and MEV bots. The chapter also explores the application of Dutch auctions and the use of MEV bots in simplifying cross chain liquidity and bridge selection.