if its in character Batman auto-loses since he won't kill and reborn would seem more than happy to
assuming Batman is blood lusted reborn should still take this quite handily in both his baby and adult forms considering he was consistently shown as more powerful than Tsuna (until very close to the end) in his limited Arcobaleno form and could beat Tsuna's father in adult form. The way i see it this is pretty much a stomp in favor of reborn and even with prep batman could only win maybe 2/10
@sandiego008: I would agree that Lucy post timeskip is an easy win but if i remember correctly she didn't have that many powerful keys pre timeskip or at least any that could defend against Nami's weather attacks
and in retrospect i would agree that Erza loses no matter the prep against robin
@the_legendary_supersaiyan_hulk: i shuld probably point out that at that point he had pretty much half of the entire dc earth jokerised at that point i would just google who he got then pick and choose if I were you. Sorry if the initial message wan't particularly clear
While we haven't seen them properly yet buggy's crew is made up of the inmates from the lower levels of impel down so they will be pretty powerful and last time we saw him (just by appearance) his crew looked pretty big so he probably has the other teams outnumbered and outgunned.
I'd give Joker more thugs and prep to make this more even maybe even add in some of the jokerised villains from the joker's last laugh to give him more power whilst keeping with the theme.
I don't really remember anything about Zombozo so maybe i'm underestimating him but the last time i watched ben 10 (the original series a couple years back) he seemed pretty weak and without more assistance from his own universe he might be the weakest here.