You’re Flash Sentry(?), but you are a Changeling.

Sci-Twi was having a nightmare about Changelings, but then she feel something on your Body in the bed as you transform into Flash Sentry. As you took your own shirt off and showed her your hard muscular chest as she feels it on your body

Sci-Twi: Huh? Gah! What are you doing here?! You’re not Flash Sentry!