Comment by mmhmm on Returned by the King - Chapter 3

Some random examples...

Stealing
Chrollo Lucilfer (Hunter x Hunter)
Kurapika (Hunter x Hunter)

Killing
Gabriel Gray aka Sylar (Heroes) 
Re:Monster 
Level Up by Hoarding 
Boundless Necromancer

Copying
Peter Petrelli (Heroes)
sharingan jutsu (Naruto)
Your Talent Is Mine 
SSS Class Suicide Hunter 
Solo Max-Level Newbie
Youngest Son of the NamGung Clan