Previously, previously, previously.
I think my entry would be an off-the-shelf excavator, jackhammer attachment, some up-armor on the hydraulic hoses, plus sheet metal to make it look like a dinosaur.
And the spergelord endgame of a Cocktail Robot is a beige vending machine. But that one won't win, out of sheer joylessness. You know why nobody watches Robot Wars? Because nobody wants to watch Wedge #1 artlessly rolling underneath Wedge #2.
I suppose, although a lot of people would watch buildings being demolished by fake dinosaurs.
Where is robot dance party? Robot dance party could win this.