I'd need to more about the various plots, time periods, locations, etc before I could start thinking up a character. What do you have in mind for this game?
Also, what kind of Spartans? Twos? Threes? Fours?
Also also, I could GM. I have a couple of plot ideas myself, but I've never had the chance to really try them out.
EDIT: Chree has passed the GM torch. So, ya. Hey Fox! Here's a pair of ideas from a game I tried to set up last year. Neither involve Spartans, but if anyone wants to play a S-II, -III, or -IV, let me know and we can come up with some new ideas.
"I need a weapon."The Resistance
When they attacked Earth, the first place the Covenant landed was New Mombasa, a sprawling African metropolis mere miles from the Ark portal. Their invasion was swift and brutal, and their retreat even more devastating. However, the city remained occupied even after the Prophet of Regret fled to Installation 05, leaving vicious brute squads and groups of lesser Covenant to crush any semblance of humanity within the city in anticipation of the portal's opening. Amidst this horror, a small yet durable resistance has come together, fighting to retake their city and force the Covenant off Earth.Marooned
When the Pillar of Autumn
crash-landed on Installation 04, much of the crew was scattered over a large area of the ring. In the haste to regroup, some of the survivors were accidentally overlooked... One such lifeboat crashes in an idyllic basin, on the coast of an azure lake dotted with mysterious structures. Most of the occupants are killed, but a ragged handful endure. Thinking there were no survivors, no rescue is sent. Surrounded by mysterious alien ruins, they must evade the everpresent Covenant, survive the Flood infection, and unlock the mysteries of the ring before it is too late.