The Krei-struction is a high-powered, mobile prototype sonic cannon that appeared in the Big Hero 6: The Series episode "Krei-oke Night".
History[]
The latest prototype was seen by Hiro, Baymax, Honey Lemon and Go Go, who believed it was a super-weapon. Alistair Krei laughed as he told them it wasn't, although it could be one—but he was not worried about it as he claimed that "anything can be a weapon".
Noodle Burger Boy hacked into Krei Tech's network and discovered the cannon, intending to steal it with his sisters to become invincible. The mascots snuck to Krei Tech's building at night while Honey Lemon hosted a "Krei-oke Nite" event to try selling Krei's karaoke machines.
Noodle Burger Boy and sisters successfully took the cannon from its saferoom, but Go Go, Baymax and Hiro noticed this and geared up to stop them. Baymax found spare parts for another sonic cannon, which Hiro plugged into Krei's karaoke machine at the same time Professor Granville was performing, to counter the power of the stolen cannon with her voice.
Noodle Burger Boy got a strong urge to sing as he remembered his days of being a singing mascot, so he left his sisters and sang along Granville. However, his voice was also redirected to Baymax's makeshift cannon, which was enough power to destroy the stolen vehicle weapon along with most of Krei's building.
Noodle Burger Boy and sisters escaped, and in the aftermath, Krei was upset that his building was destroyed and that "no one warned him about the cannon being dangerous", having completely ignored Big Hero 6's advice.