When Task Force X breaks into the high-security storage room, you can see the original Luthor battlesuit, Grodd's helmet, pieces of Lex's giant robot from "Legends", Toyman's robot, Luthor's power disruptor, and assorted Thanagarian weapons in the background.
The only time J'onn J'onnz was referred to as (after his name, in the sense of a title) The Martian Manhunter.
Task Force X is based on the DC comic book property The Suicide Squad, which is the nickname of Task Force X which is made primarily up of imprisoned supervillains offered clemency if they participate as expendable and deniable agents on dangerous secret missions for the American government. However, as American broadcast standards for "children's television programming" disapproved of the use of the word "suicide", the organization's official name is used exclusively.
Deadshot has a supply of Light Speed candy-bar wrappers, which Flash advertised for in "Eclipsed." Michael Rosenbaum provides the voice for both Deadshot and Flash.
Included as a bonus cartoon on the bluray release of Justice League: The New Frontier (2008).