Slattery accompanied his new party as they escaped from the Ten Rings Headquarters, serving as Morris' translator as he guided them to his home realm of Ta Lo. When Wenwu and the Ten Rings followed them into the dimension, Slattery participated in the subsequent battle and survived.

Is Trevor Slattery dead?

After being kidnapped, Trevor Slattery was delivered to Xu Wenwu, the Mandarin himself, at the Ten Rings Headquarters. Furious at Slattery for stealing his name, Wenwu sentenced him to be executed.

Did Trevor Slattery survive the snap?

It's that controversy amongst fans that will probably keep Trevor from showing up again, even though it'd be pretty funny that of all people, he ended up surviving Thanos' Snap.