'Til all are one

" ' Til all are one" is a phrase knit through Transformers mythology and legend, often used as a rallying cry by the Autobots. It's been translated as either until the end of the Great War, when all Transformers shed their factional affiliations, or until all are rejoined into the Allspark of Primus.

Generation 1 Animated Continuity
The phrase was first introduced as Optimus Prime's deathbed mantra, and it would then be repeated regularly by Ultra Magnus, Rodimus Prime, and many of the other Autobots.

Having seized the Matrix of Leadership, Galvatron gloated that "all shall be one" under his rule.

Beast Wars
Rhinox claims that the Matrix dimension is a place "where all are one."

Beast Machines
As Megatron consumed the captured sparks of every Cybertronian, he urged "let us all become one!"

Robots In Disguise
Omega Prime's Matrix Blade had this phrase written across the hilt.

Dreamwave comics continuity
In the War Within, the Autobot Council of Ancients held court in a chamber embossed with the same logo that had appeared on Omega Prime's sword.

The Seal of Primus also had 'til all are one written on it.

IDW comics continuity
The Megatron Origin miniseries shows a much darker use for the phrase. During a gladitorial death match between Megatron and an unnamed opponent, the crowd begin to chat the phrase, apparently attempting to goad Megatron into finish his opponent off. It is unknown why the crowd would choose this chant to encourage a gladiator to kill someone.