Only gonna be focusing on the 7 DLC fighters put into Smash 4 and so far here are my thoughts on how each play.
Mewtwo handles just like he did in Melee with a few added adjustments into his moveset being his longer range with his tail and his Final Smash which is him going Mega Mewtwo Y and using his signiture Move Psystrike. So far feels fun to play as him now as it was back then in the days of Melee.
Lucas despite his game having not been in the US sure is fun to use despite him not getting much changes in his moveset then again Lucas was a fan favorite from Brawl and he is still as powerful as he was then and is still the same now though despite it's slow range his up Smash is the best killing blow but leaves him vulnerable if it misses. Never used him much but he is still good to play as now and again.
Oh so glad to finally have my original Melee Main Roy back in Smash again with an entirely new moveset to boot at least concerning his Standard Attacks his Specials are still the same as they were but still carry some of their original powerhouse style rushdown despite his Standard B still having it's rather high launching power. Despite that though he's fun and always will be for me despite the Fire Emblem community not liking him due to his stats in his respective franchise. Though minus that Roy is back.
Now comes the suprising DLC characters starting off with the freaking mascot of the fighting game genre Ryu from Street Fighter. Now while the freaking fact he's in Smash is suprising enough but the fact of how he plays is just as equally impressive. Ryu's combo heavy focus plus his hard hitting moves is rather impressive and the fact you can input the original commands for his series movesets for his specials is a good bonus especially since doing said command inputs makes the move stronger and those inputs are for his Hadoken, Tatsumaki Senpukyaku and Shoryuken respectively that and he has 2 Final Smashes depending on how far his enemies are from him being if no one is close to him he does his Shinku Hadoken and Shin Shoryuken for anyone unlucky enough to be close to him.
Next off and RPG fan favorite from Final Fantasy of all places being Cloud Strife. Now while Cloud was a suprise he's suprisingly simple to use. Just hit hard and bang up the enemy hard hitting rusher type character fun to use but his main downside is his end lag after using his attacks. Not suprising considering that huge ass buster sword he wields.
Up next the second Fire Emblem DLC character Corrin and to those of you who still say that stupid "Oh he's/she's another fire emblem character." crap just shut up I've had enough of that shit and you guys really need to grow up from that. Seriously did anyone complain abour Roy but Lucina was hated on despite Roy being a clone like she was? Anyway back on topic Corrin is suprisingly hard to get KOs from when using his/her standard and Smash attacks as his/her Specials have the higher launching power suprisingly or more specifically his Standard B Special Dragon Fang Shot. Corrin is rather interesting and it just makes me more hyped up to get Fire Emblem Fates soon so yeah no more else to say on Corrin.
Now for the Smash Ballet Winner Bayonetta of all characters. Now Bayonetta is rather easy to use but hard to master her attacks and combos are rather slow and her inputs need to get adjusted especially when using them in quick succession unfortunately they don't do much launching as her Smash Attacks cover it that and Witch Time helps with the combo power this Umbral Witch has. So far probably an S Rank Tier fighter right here.
Now time to rank them in my opinion...