General Mills Presents - Justice League (1-9 series + Convention Exclusive)

General Mills Presents: Justice League was originally a 4-issue mini-series featuring the Justice League available in and around October 2011 in specially marked boxes of General Mills cereals, including Honey Nut Cheerios. This mini-comic measured 7" by 5". The stories were continued on the website Big G Cereal Heroes.
Several years later, issues 5-9 were released (starting in February 2014). Issues 5-8 were available in various General Mills cereals in all stores. Issue 9 was only available in boxes of Cheerios sold at Target. These stories were also continued at Big G Cereal Heroes (and the older stories were taken down).