So here's Lockdown and his BotCon counterpart, the Stunticon Wildrider. For being a dark gray redeco of a black toy, they look pretty different, which is nothing short of amazing. (Note: My Lockdown is a little custom-painted.) The silver and burgundy definitely distinguish him, and the most recognizable part of of Lockdown, his lantern-shaped head, is replaced by a new one. Wildrider has a pointier jaw with jagged teeth and a little helmet.
Another nice thing about Wildrider is that he's the "Blazing Lockdown" mold, which means he comes with the chainsaw instead of the hook. I never got the chainsaw version, so that's an extra bonus for me.
Despite Wildrider's feral appearance, he actually sounds like Dr. Smith from Lost in Space.