Conker was released as part of the DLC Pack originally called "Conker's New Adventure" on April 22, 2015 (later renamed to "Conker's Big Reunion").
At the end of Project Spark's E3 trailer, Conker the Squirrel makes an surprisingly comeback there he cut up the game's logo (Just like he did with N64's in Conker's Bad Fur Day). After that Conker explained that he couldn't resist to do it, jumped over the logo and said: "Almost 10 years without a new game. Guess we'll have to make our own!"
His quote that he made at the ending related to the fact that the players can create their own Conker games. Additionally, with him appearring as a Champion, he would have access to various abilities and he can be used in Crossroads game mode.
The original release of this pack was estimated to be released in the middle of 2015. However, it was later revealed in another trailer that the pack is actually going to be released in 23 april and it's going to be called: "Conker's Big Reunion".
Conker is voiced by Chris Seavor, the original voice actor from the N64 game.
This Champion is free as of Oct 5th.