Idk if it’s possible but gunko being saved from the clutches of imu and having her free will returned to her somehow could be a callback to brook gaining his shadow back, since she seemed to have that moment where she recognised brook briefly
But Oda established the connection between Gunko and Brook for a reason. Not to mention Brook just so happens to have weird soul abilities that we've seen can effect individuals stronger than him (Big Mom)
Feels like he's a lock to be Imu's counter for this arc
