Technically, Havok IS Cyclops' brother in the film but it won't be brought to light. Cyclops and Havok never knew they were related for a minute. They were even in the cartoon together but there was no mention of them being related.
I KNOW THAT HAVOK IS CYCLOPS LITTLE BROTHER BUT
the writer said THIS HAVOK has no realtions to cyclops...i know the story of cyclops and havok, parents gave them the last parachute, they jumped out the place, thought their parents were dead blah blah blah, meet up later, but THIS HAVOK according to the writer has NO REALTAION top cyclops its almost like this is an alternate universe
X-Men: First Class producer Bryan Singer has revealed that two characters who were brothers in the Marvel comics will not be related in the movies' continuity.
Singer acknowledged to The Los Angeles Times that "the timeline is different" between the X-Men movies and the comics, and thus Havok (Alex Summers) and Cyclops (Scott Summers) won't be brothers in the film universe. (James Marsden played Cyke in the original trilogy, while Lucas Till plays Havok in First Class.)
different timeline, different marvel universe......havok and cyclop arent related in this timeline so gambit can be a black girl raised in haiti who joins the x-men in the sequel it doesnt matter because its basically an alternate marvel universe, not the one we read while growing up and watched on tv, its a made up universe