Need for Change

Lance McClain was an Omega.
He has been pretending to be a Beta since he first presented at the age of 13 due to his family shunning him, leaving him isolated and alone. Until he finally managed to enter the Galaxy Garrison, but even then it wasn't long until he was suddenly flown out into outer space by the blue lion and became part of team Voltron.
Can he carry on keeping his true status a secret? Scared that his second family will do the same as the first he hides himself to try and be the best Beta everyone wants.

Lance - Omega
Keith - Alpha
Shiro - Alpha
Hunk - Beta
Pidge - Hasn't yet presented
Alteans don't have A/B/O dynamics.