After you defeat the lost king you immediately face the lost queen however you lose all of your games and have to 1v1 her with the provided tek spear
Lost Queen
The Lost Queen is a powerful boss in ARK: Lost Colony who was transformed from a would-be hero during her confrontation with the Lost King. She represents a significant threat with unique abilities tied to the expansion’s story.
More Lost Queen Encountering Tips
All difficulities(gamma,beta and alpha) all have this boss at 100.000 hp which means alpha and gamma is the same hp but it just has harder gameplay.(less time,more minions etc.). You have to fight the boss with a tek spear too if you didnt know already
When she points a single scythe at a player use the deflect with the tek spear or the attack will do loads of damage and sometimes one shot you even at 1000 hp on your player.
Learned this the hard way, the tek spears do friendly fire so if theres multiple of you attack her one at a time, i did this with 2 others and they both died to friendly fire in just a few swings so i was left solo, be careful it can 2 swing kill your friends