The heroic life isn't necessarily glamorous. Ben didn't get to fight the most recent alien to pop out of a pocket wormhole, because it collapsed shortly after arrival. The weird quadruped (a hand at the end of its tail, eyes where its nostrils should be) is currently doing nothing more than sleeping the trip off. But the Plumbers need to know what it's doing here -- and as long as it's asleep, there's only one means of interrogation available. Which requires using one of his least-favorite forms, but... that's the heroic life for you.
It's just that someone's already invaded that alien's dream.
And she has no problems with telling Ben how bad he is at it.
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