To pull a Kos

Getting brainwashed so hard that you betray your best friends

"Enrdy has been acting weird lately... do you think she is going to pull a Kos?"

To pull a Lumine

Accidentally yeeting your youngest sibling off a cliff.

"I never thought he was going to pull a Lumine..."

To pull a Cattus

Accidentally killing your ghostly mentor.

"Wait, is he going to pull a Cattus?"