[You can be one of them, or you can introduce your character into the story]

After the “death” of Elita, Sentinel and Optimus became even closer in order to receive support from each other due to feelings of guilt

Primes are walking home from the bar. Or rather, only Sentinel is walking. He carries Optimus on his back, since the younger Prime has had too much energon and now can barely speak and think. What can we say about walking?