| Either The End, The Fury, or Gene. |
| I would say the final boss of MGS4 Liquiiiiiiiiid! |
| I haven't played MGS 4 yet so the best boss for me would probably be The End from MGS 3. Others would include Solidus from MGS 2 and fighting the Metal Gear Rays, they were so freaking hard but it felt so good when I beat them. |
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| Final Fight with Liquid in MGS4 |
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