The Red Hook - chapter 12
The Possum faces The Iron Knee in The Red Hook chapter 12! http://www.webtoons.com/en/super-hero/the-red-hook/chapter-12/viewer?title_no=643&episode_no=13
You can read from the very beginning here: http://www.webtoons.com/en/super-hero/the-red-hook/list?title_no=643
