Things the Batfam forgot to tell Duke when he joined
Whenever any member of the Batfam mentions “that time I was dead,” they aren’t kidding.
Just because you haven’t seen Tim in days doesn’t mean he isn’t there. The same applies to Cass, for entirely different reasons.
If the Red Hood ever breaks into the Manor and tries to hold you hostage, don’t worry about it–the guns aren’t loaded, that’s just Jason doing a bit. That’s how he asks Bruce for money.
Bruce actually has THREE biological children. If a tall Damian suddenly appears in the Cave, he is from the future and can be trusted, and will occasionally bring back future snacks. Don’t try to attack him: he is stronger than you. Beware the girl: she is from an alternate universe and may attempt to introduce you to tv shows that don’t exist. You will be very disappointed.
If Christopher Kent gives you his armor and tells you that it can help you fly, he is lying. He is Kryptonian, and the thrusters are for show.
The guy in red eating your cookies on Christmas Eve is NOT Santa. That is Barry Allen. Do not get between him and food; you will regret it.