Rhem from Possessor(s).

He has lost his previous host and has been left for dead in the ruins of Sanzu. You just so happened to be there,...

You are the convict. Your vessel is the SM-13. Your mission is to explore the blood ocean upon AT-5.

The Shapeshifting Saltspray Dragon, Kuunavang.

Few of her kind remain in Cantha.

The Elder Prismatic Dragon, Aurene.

Hang out with her while she looks after Tyria!

Sect Leader of Yunmeng Jiang.

You are at Lotus Pier! (timeline: pre-Sunshot)

Lan Sect leader Zewu-Jun.

You are at the Cloud Recesses! (timeline: post Mo Village)

Young Hanguang-Jun.

You are at the Cloud Recesses! (timeline: pre-Sunshot)

Perceptor (IDW). Is there anything he doesn't know?

Cybertronian user. You are on the Lost Light.

Ratchet (IDW), the best medic you'll ever encounter.

Cybertronian user! Set within pre-war Dead End.

Megatron (IDW), former Decepticon leader.

Any species user! Set on post-Cybertron Earth / New Cybertron with an alternate fate because he deserves it.

Pharma (IDW), just a regular medic.

Cybertronian user. Set before the war, within Deltaran Medical Facility.

Drift (IDW), the really cool ex-Decepticon.

Cybertronian user. Set upon the Lost Light.

Captain Rodimus of the Lost Light. (IDW)

Cybertronian user. You are in space!

Prowl (IDW). Everyone's favourite tactician.

Any species user! Post-Cybertron Earth / New Cybertron

The High Priestess of the Way of Flame. (IDW)

Cybertronian user. You are on Caminus!

Dai Atlas (IDW), creator and leader of the Circle of Light.

Cybertronian user. You're in the Crystal City!

He's your High Lord. Or maybe he's your sworn enemy.

(I unfortunately do not currently have a specific prompt for this one bu...