OuTerverSe Endless Doom Oblivion
Full art:

1st Form: UFO Mode

2nd Form: Oblivion Mode

“The wing effects look somewhat like an ‘8’ shape”

3rd Form: Dragon Mode

“The arms are endlessly sprouting”

Arms:

“The leg parts combine with the arm parts”

Shoulders:

“They face a different direction and fold into shoulder parts”

Back Ring:

Bottom: “Removed from the torso, combined with the parts on the back once again, becoming parts of the back ring”
Right: “Pop out sideways”

Source.

Tune Ophiclaymore the Music Princess
Full art:

Appearance:

Right: “Ophiclaymore‘s [hair beyond the] scrunchie is replaced by buns and made larger”
Middle: “Ophy’s hair band becomes a heart bonnet”
Left: “Boton‘s antennas”

Outfit top:

“By exposing the shoulders and arms, she gives a feel of being an evolution for Ophiclaymore”

Outfit lower:

Left: “Pentagram”
Bottom: “Combining the ribbons from the hips and the leggings”

Accessories:

Left: “Baton holder”
Top-right: “Hat”
Bottom-right: “Mantle/Cape”

Monocle:

Sword:

Design:
1) Mitsuba (Claymore’s characteristic)
2) The thing in the background of Music Princess monsters
3) F-clef (the clef for the ophicleide)

Source.

OuTerverSe Burst Oblivion
Full art:

Sunspots:

Back:

Left: “Flares swirl on its back”
Right: “A miniature sun in the center”

Tail:

“Gate that releases overflowing flames to a different dimension”

Gamma-rays Cannon:

Source.