Is Beowulf a boastful glory seeker or a noble selfless man?

Beowulf was Self confident. He may come across as arrogant and prideful at times but that is only because he boasts as if it was him showing he is able to kill the monster. It is more of him proving he can do what he says he can do. Sort of like a resume. He knew what he was capable of he just waned other people to know as well.