Favorite unit?

Hey I was just wondering what is everybody's fav unit and why? Ideally not units that you can only spawn once (titans, son of osiris etc but greek heroes are ok)

Personally for me it's unfortunately impossible for me to choose between Gastraphetes and Fire Giants since I use them the same way as anti building units that aren't siege engines. Gastraphetes have amazing range and great damage but a gang of Fire Giants can easily decimate a whole group of the enemy's troops in a second if they all use their special ability at the same time