User blog comment:ExSturminator01/Mass Effect 3 Predictions based on ME2 hints/@comment-244536-20100212161355

I don't think that any of the characters in ME2 will be party members in ME3, as they might have perished. Furthermore, I don't think any characters from ME1 that might have died (ash, alenko, wrex) will be party members either. However, it is possible that other ME1 characters will join you in ME3, like how Tali and Garrus joined you in ME2.

As for TIM, I think he's going to be a villain, but not in league with the Reapers.