Tash in "Dragon Age: Shadowkeep" is a very useful and powerful teammate in the game, and Tash and Emirich are the last wave of characters who can join the "Void Guard" career. If you want If you want to recruit, you can do the "Dragon Hunter" mission. After completing the mission, the recruitment will be completed.
How to recruit Tash, the Shadow Barrier Guardian in Dragon Age
Although Biomechanical romance stories have become more narratively complex in recent years, they still follow the same basic principles - talk to your chosen lover enough and choose the Heart option when available. However, you need to complete certain tasks to advance Tash's plot (or whichever character you choose), and you need to maintain a high level of favorability to unlock dialogue that allows you to flirt.
Tash and Emirich are the last wave of characters who can join the Void Guard cause. After successfully protecting Minrathos or Treviso, you will return to the lighthouse to find that either Lucanis or Neve has left (depending on the option you chose).
After Tash and Emirich are recruited, they will return and gain the "Tough" status. Their disappearance and the struggles of the previous mission led Rook to seek out a necromancer and a dragon hunter, who turned out to be Tash.
Ending this scene will unlock the quest Dragon Hunter, which will take you to Revain and lead to Tash being recruited. This gives you an insight into Tash's relationship with her mother, which is a core part of their character development and something you need to handle in order to have a successful relationship - or as Tash calls it, a successful "in-Tash relationship." Mlock".