|“If anyone is going to destroy Ninjago, it'll be me, not some Oni usurper with a walking stick.”|
|— Garmadon to The Omega, Into the Breach|
It appears to be made out of wood or a similar material, and it has a purple crystal at the bottom of it, possibly used to summon other Oni.
The Omega continues to carry the weapon and uses it to threaten Lloyd when he escapes with his father from the fog.
The Omega is seen continuing to use his staff as he leads his horde in attacking the Monastery of Spinjitzu. Garmadon wields a similar looking staff when fighting the Omega in his enhanced Oni form.