Nightmare and Mega Tento were two bots in Season 2 of BattleBots on ABC.
Neither of them made it to the quarterfinals (or fought each other), but they are fun to watch.
About this creation
Nightmare has a massive spinner that can do massive damage, but doesn't have good mobility. It's design is also easy to push around or tip over, which usually means the end for Nightmare.
Mega Tento has a (really) small rear-mounted drum spinner.
It also uses the ladybug dome to capture enemies and push them around.
It's not very effective in battle, nor that sturdy.
(if an enemy has any real weaponry, they can usually disable MT)