Christmas

Christmas is a holiday celebrated by humans on December 25th. It seems to revolve around the exchange of material goods, the slaughter and festooning of conifers, and the consumption of roasted avians.

Marvel Comics continuity

(Note: Events from the UK-only comic stories are in italics.)

The magic of Christmas made Circuit Breaker not kill Jazz. Christmas Breaker!

The magic of Christmas made Jetfire appreciate his Earth heritage. The Gift

The magic of Christmas made Starscream realize that even if he doesn't care, helping people can make him feel... well, he still doesn't really care. Stargazing

The magic of Christmas made Optimus Prime renew his pledge to protect Earth. Cold Comfort and Joy!