Some say that the are seperate demensions, and in each of those demensions we exist but different. All the same person, all the same age, height, build, and weight. I thought it was an interesting idea to turn into LEGO. Here are the different Therons thus far.
Spartan 113: One of the SPARTAN IIIs of Delta Squadron, formed by Commander James Green. Promoted to Captain and had letter denomination dropped fmom his name. (Formerly D113) Leader of Fireteam Phoenix. Only SPARTAN III to wear MJOLNIR MKVI armor.
Theron: Trained as an assassin until age 12, worked for the guild for one year following before going renegade. Donning bloodred robes he decided to work for himself than follow any leader. His head is now wanted by the guild, however since he was once one of them he knows their tricks.
Captain 113: One of the specialized units that are clone commandos. He was cloned from his grandfather, a veteran of the Clone Wars, William. (As opposed to Jango Fett) Promoted to captain and given red armor with a jetpack soon after. (Interesting note: 113 is really 14 years old, but since clones age faster appears to be 25.)
I hope you guys like this and give me ideas for other Universes to take from. Next I am thinking Dragon Rider but nothing is set in stone.
I believe the best way to explain so many sig-figs being the best jedi / sith or bounty hunter or assassin is parallel universes with the same history each set in a different time.
But yeah, I thnk you put too much work into your Master Chief decals.