looks like this scene is from the intro to MechWarrior 3. with the clan thor and madcat going up against the 2 fireflys(one dies) an atlas (which pilot ejects after it makes the madcat go critical in its fusion reactor) anda vulture (which had leg damage)
You don't come home till 4 AM cause you're roaming In the streets somewhere, downtown. We would feel swell if only someone would tell us What goes on down there, downtown. But every time we ask you what you're doing after dark there You just say that you were frugging to Petula Clark there That's what I mean So, kids, give your folks a break Because you're driving us crazy, we sit here all night and take Milltown, swallowing pills so we'll Calm down, counting the hours you're Downtown, you and your frug and your slop.
Never heard of a mech called Thunderbolt but it reminds me a bit of a mixture between Nemesis and Loki. I like the background, it suits that grey model really well! And your picture got also cool lightning in it!