My dad Remarried and had two more kids. In order for them to get baptized, he was told he has to annull the marriage he had with my mother... Since an annullment is to deny that I am his child and that the marriage existed, will that affect my standing in the catholic church?don't answer if you aren't sure and don't redirect me to another post.

I would check with your parish priest for the answer to this. An anullment of his marriage to your Mother does not affect your standing in the church . I am not sure whether he has to anull the marriage to have his children baptised if his wife is a cathlolic in good standing.

Church annulments or divorces can be very complicated, but they do not affect the children’s status in the Church. An annulment doesn’t ‘deny’ any child or change the relationship of the child to the parents.

The question contains more than a few misconceptions; I would strongly suggest talking to your parish priest.

JoeT

I fully agree with Joe.
Talk to your parish priest or your bishop.
Peace and kindness,
Fred