- Victor and Gregory will do a HeelFace Turn, since in the opening, before and after their introduction, they're featured next to Gilbert, implying that they're going to join the main team.
- Then again, the fact that they are always slightly shadowed while Gilbert is brightly colored might be an allusion to how they are also humans, but have betrayed Earth.
- Episode 25 revealed that it is possible to summon 2 Majin at the same time. Seeing as the area that appears when summoning a Majin has a total of 9 squares, its likely up to 9 Bones can simultaneously be used to summon Majin at the same time.
- Liebert will have her Bone upgraded to Iron. Considering how tough their enemies have become, and since the humans have found the secret to upgrading Bones, this is very likely.
WMG / Majin Bone