EA Alligator v1.0 MQ4 it’s essential to understand the foundation upon which it is built—the Alligator indicator. Developed by Bill Williams, the Alligator is a trend-following market indicator that uses three smoothed moving averages to identify market trends and potential reversal points. These averages, known as the Alligator’s jaw, teeth, and lips, create a visual representation of market conditions, helping traders determine whether the market is trending or ranging.