60 Beheading Kakashi, 30 Shurado

I was searching for a list about what you can get from arena and didn't find much, but here's what I've collected so far for anyone interested.

60x Ninja fragments

Mabui

WB Asuma

Fu Yamanaka

Torune Aburame

Ao

Akatsuchi

Kurotsuchi

Cee

Five Kage Summit Temari

GNW Sai

GNW Neji

GNW Kankuro

Beheading Kakashi

30x Ninja fragments

Pain - Gakido

Pain - Ningendo

Pain - Shurado

Pain - Chikushodo

Pain - Jigokudo

NOTE: I've heard rumors of people getting Mei fragments or Darui Fragments or Killer Bee fragments as people mentioned here but I've never seen anyone provide a screenshot of this or any actual proof that they can be gotten, so until that happens I have to list what I know and not what "might be".