Heisenberg is Walter White's persona whom started to emerge in season 4. Walt borrowed this pseudonym from the Nobel Prize-winning physicist Werner Heisenberg, a chemist who was also diagnosed with cancer.
This colorway is mostly black, with about 20% of the Walter White green colorway. Even though he was mostly dark, I do believe there was still a little bit of Walt left.
Available in Sock Fingering, Quarter Round Fingering, Swish DK, or Swish Worsted Weight.
Get more information on each yarn base under "Yarn Bases" on the menu.