Optimus Prime represented this ... though his vehicle mode sadly still maintained the infamous "flames" added to his design ...

Optimus Prime is a legendary Autobot ... He can tear through nearly anything with his massive maw, and unleash flames and lasers from within. When the going gets tough, his tail can knock foes ...

If Amazon sells out, it's worth noting that the Lego Store restocked Optimus Prime, too, but you'll have to pay the full $180 MSRP. Lego officially denotes Optimus Prime as "hard to find." ...