Ah, the infamous wrecking ball... As the very first encounter with Dr. Robotnik in the original Sonic the Hedgehog, most people would say this is the most memorable boss in the series. However, my argument is that since Green Hill is the series' most memorable level, any boss battle would be memorable if it was fought at the end of this zone. While the wrecking ball is classic, I don't think that it would be as memorable if gamers first fought it in a zone other than Green Hill.

 

 

 

 

 

 

Screenshot source