For this we are going to go with 6 out of the original 7 just because the 7th member has changed and let’s face it, they don’t have a large rogues gallery.
I love his look, and the arkham game did a great job bringing him to life. Those random squeals when he talks is just so creepy. He hasn’t been overused either so it leaves me wanting more stories with him and to read more about him.
Also I think he was one of the high points of the Gotham series so everytime I’ve seen the character I haven’t been disappointed.
When watching Superman the Animated Series episode of ‘A Way Of Flesh’ for the first time, I thought Metallo was a great villain for Superman, with Kryptonite heart, he was a tough villain for Superman to defeat, also love the Superman Adventures #2, that was a good story, and had a toy of him as well.