Highest is the title of the Head of the Red Ajah. Pevara notes that the Highest has almost absolute authority over any Red sister and over the Sitters as well.  She even appears to handpick the Sitters. The Highest's commands are to be obeyed - in fact, she is to be shown the same deference as the Amyrlin Seat herself.  As such, she holds a vast amount of power not only within her Ajah, but in the entire order of Aes Sedai itself, the Red Ajah being the largest one. 
Women who have held this title are as follows:
- Tesien Jorhald – Was Highest when Pevara Tazanovni was raised to the Red around 130 years before present day. 
- Galina Casban – Elected Highest in 981 NE.  She was captured at Battle of Dumai's Wells by the Shaido Aiel and presumed dead by the White Tower. 
- Tsutama Rath – Elected Highest to replace Galina Casban. She, along with Toveine Gazal and Lirene Doirellin, was one of the Red Sitters exiled because of the Vileness invited back to the Tower by Elaida do Avriny a'Roihan. Many believed her to have become nervous or bleary-eyed from her years of toiling and hard labor, but in fact she came back more ruthless than ever. Tsutama appears at least somewhat mad to her fellow Reds.