Kuben Blisk is definitely a character in Apex Legends but whether or when he might appear as a playable character remains a mystery, unlike his abilities.
Kuben Blisk was an antagonist of Titanfall series but might be well on his way to becoming the protagonist of Apex Legends. That said, considering the timing of the data mining that leaked his abilities, it's not impossible that Respawn Entertainment put his abilities in the data in order to bait people for April's Fools.
On the other hand, he might be a real playable Legend, it's hard to tell at this point. Anyway, his abilities were dug up by Tobias, a long-time Apex Legends leaker and data miner and he posted a video of Blisk's ulti in action. First things first though so let's get into all three ability descriptions.
Pilot Kit is the passive ability on Blisk and it allows Blisk to use his data knife to hack survey beacons and allows him to wall run.
My Ring, My Rules is the tactical ability that allows Blisk to spawn a damaging field that will behave like the Arena Ring.
Standby For Titanfall. Need we say more? If so, this ultimate will drop a Titan at Blisk's designated location but he will not get to pilot it. Instead, the Titan is automated and will assist Blisk and his team in combat.
Keep in mind that even Tobias mentioned Blisk might not be the next Legend to join the roster so don't repeat our mistake and get hyped too quickly.