It

It is an ancient mechanoid from the Generation 1 continuity family.

They all float down here...

The entity known only as It resides in the Autobot Matrix of Leadership. The exact relationship of It to the Matrix is unknown, although It was probably an Autobot in life. It may be the chronologically earliest being to have merged with the Matrix.

(Note: This robot was never named in fiction. The designation "It" comes from a cartoon episode script.)

Fiction

Animated continuity

Voice actor: Peter Cullen (English), ??? (Japanese)

And when you're down here with us, YOU'LL FLOAT TOO!

After being injured on Chaar, Rodimus Prime experienced a bizarre (probably metaphorical) vision. He saw the physical form of It, which shattered, releasing a dark destructive presence that destroyed a sequence of ancient Cybertronians before fading to reveal the eerily-similar face of a Quintesson Judge (there is also a passing resemblance to the Vok), which also shattered. Five Faces of Darkness, Part 2

The nature of the connection of It to the Quintessons (or Vok) remains unknown.

When the Hate Plague threatened to infect all life in the universe, Optimus Prime made a desperate mental trip into the Matrix in search of a cure. After speaking with Alpha Trion, Prime encountered It, which told him of the Matrix's previous exposure to the Hate Plague. At that time, a wise man was able to contain the plague's spores and contain them within a star, but no one person had enough wisdom to destroy the plague completely. Prime gambled that the accumulated wisdom contained within the Matrix itself would be enough, and released it, which indeed destroyed the Hate Plague. The Return of Optimus Prime, Part 2

Whether the essence of It remains in the Matrix or was lost when Prime opened it is unknown.

Things to ponder

• In this case, how do you spell the possessive form of "It"?
  
  
  From Teletraan I: The Transformers Wiki, a Wikia wiki.