The first time that Dick is seen using the name Dan Danger since the season 1 episode Performance, where he went undercover with Miss Martian, Superboy, Artemis, and Red Arrow in the circus he grew up in to investigate high tech thefts happening in Europe.
In the circus audience you can see both Tye Longshadow and Asami Koizumi (aka Sam) along with Tye's grandfather watching Dick Graysons performance. This is the first time that all three character have been seen since season 2. While the grandfather only appears in one episode towards the beginning of the season, both Tye and Sam were part of the group, along with Virgil Hawkins and Eduardo Dorado Jr, known as The Runaways. While Virgil and Eduardo would return as members of the Outsiders in season 3, this will be the first appearance of Tye and Sam since the season 2 finally.
The episode ends with in memoriam to Ed Asner.
Rocket also dated Dick.
Dick puts together the entirety of the season subplot within a single day. Proving Batman taught him well.