Can someone explain to me how to finish enemies on Sonic? I'm having trouble KOing after chaining combos and racking up decent dmg. Essentially I just need to know what moves are best kill moves and at what percentages against heavy/medium/light targets and is rage necessary? Thank you in advance. I love this community.
I can only give a guideline, as I play mostly on the 3ds, where I think killing is harder than on the Wii U because of stage size differences.
Basically, Sonic's kill come from reads as opposed to guaranteed set ups. Early kills are generally situational, requiring very specific damage ranges as well as certain levels of rage. At higher percents, your smash attacks will help you out, but dsmash and upsmash have slightly punishable recoveries, so be weary of that. Bair is also your friend.
Once you get to the super high percents, like 150 and up, upthrow and fthrow will do wonders. Bthrow on the edge will get you kills as well. Homing attack and spindash/spincharge into nair can kill as well.
Once again, I can only provide but so much input because of Wii U 3ds differences, but I do know that Sonic's kills are read based, and may require you to condition your opponents, while sometimes you may just have to keep doing damage and not get hit until you get a grab that will kill. Obviously that's not the optimal way of doing things, but sometimes you gotta do what you gotta do.
What I would do (and have done) is go to training mode and see when your attacks kill. Pick different characters from different weight classes and see when moves like your smash attacks, bair, nair, uair, homing attack, and your throws will kill. With that basic knowledge in your head, you'll be that much more confident in killing your opponents, and it will alleviate pressure within you, allowing you to play that much more better. Lab it up bro.
Sonic kills generally come from reads as opposed to guaranteed set ups, and it might be in your best interest to condition opponents into those reads that you need.