Beast Wars had a couple of notable combiners but perhaps Magnaboss is both the fan favorite and most infamous of them because he is both awesome and scary. Combined, the heft is undeniable. Separately, Prowl, Ironhide*and Silverbolt all have their own charm and their challenges, not the least of which is the threat of the ever dreaded GPS!
https://youtu.be/FgWhHdmZOw4
