(please log in to view the image)
Havok, also known as Alex Summers, is the son of Christopher Summers and Katherine Anne. He is the brother of Cyclops and Vulcan. Uncle to Cable and somewhat related to the gazillion Summers' children running about the Multiverse. He is also the father of Katie Van Dyne Summers, who is also lost in the Multiverse.
(please log in to view the image)(please log in to view the image)
Havok has the power to absorb ambient cosmic energy and release it in the form of cosmic energy blasts. These blasts superheat things, cause them to explode or knock them over. While he generally has an “average level” he can also actively absorb energy and go far beyond. He has traditionally struggled with maintaining control over his powers and has at various points in his history resorted to wearing energy-regulating suits, similar to Cyclops' visor.
He had a history of living in his brother's shadow, being seen a lesser leader and such, but started stepping out of that shadow with X-Factor and has in recent years reached heights far above anything Cyclops has ever accomplished. Not just in more or less single-handedly rescuing the Universe/Multiverse, but also in becoming a more accomplished leader and staying true to Xavier's dream.
Havok has recently been leading the new Avengers squad, but seems to have broken apart to join his brother due to the personality shifts in Axis. He has also been banging the Wasp.