30MS Option Parts Set 18 (Sergeant Costume) [Color C]

The Sergeant is the second of the more voluptuous Costume kits, using mostly the same mold as its predecessor, Aider, this time in Color C skin and a bat motif.
This kit only includes a torso, hairstyle (and head without faces), shoes and ringparts. The Sister used in the promotional images is Sestieh (face, limbs and gun).

Aesthetics:
Despite being a recolor of Aider, this time the outfit mimics that of a sci-fi military police or space-patrol officer, in a somewhat villainous color scheme, with bits of white on a black outfit, dark red accents and transparent red ring parts. It has the same puffy sleeves (upper biceps), but this time the hips and thighs are black, forgoing the garter-belt look. There's a dark red bat emblem on her extremely generous flotation devices (or maybe space buoys?).

The costume's headpiece is a side cap with small bat ears, though you could easily identify them as a lot of other things, such as small dog or horse ears (useful for an Uma-musume cosplay).
It also comes with hip armor and a pair of large unique shoes with 3mm holes under the heels (Aider and Sprint have different kinds).

The included hair is light grey with very long and elaborate twin tails.

Compatibility:
This is a fairly large torso, so it's best paired with some of the bigger limbs (Sestieh, Belveria, Rishetta and many others).

As mentioned the Sergeant is a recolor of the Aider mold (Color A) and the Sprint costume (Color B), so the body parts are inherently interchangeable, but since the colors don't have much overlap and don't share any skin colors, it's limited what actually matches - Aider has black sides, so if you want an even darker Sergeant uniform, you can swap those. Or, alternatively, if you want more white on her, you can use some of the white parts from the Sprint costume.

The Sergeant's bust is the peg and dual tabs style, so there are a lot of alternatives out there, if you wanted a different skin color facing forwards - However, you'll need one of the other two kits to swap out the bare skin on the back.

If you want to stick with a Color C face plate, options are fairly limited. You have:
Luluce (and Luluce Lily Wear) with brown eyes
Siana-Amarcia with blue or amethyst eyes
Ilshana with lavender eyes (lower set to look younger)
Sestieh with cyan eyes
Marical with pink eyes
Myasti with red/brown eyes

Changing the hair at the same time would probably do a lot to make the model look more cohesive.

Conclusion:
Sergeant is a huge visual upgrade on Aider, of which the latter has mismatching product images (the colors are very different shades of pink).
It just looks like a more fun outfit with a solid theme and the much simpler color scheme of black/white with a bit of red, looks great.

The downside is the hard-to-match skin color and finding the right limbs. Sestieh, again, just seems to be the best option with her white arms and black legs. Alternatively the bare Color C limbs also fit just fine, but those are hard to get a hold of.

Some of the promotional images seem to use water slide decals eyes on blank Color C face plates, but getting a hold of those sheets is also difficult. Still, if you can get them, that's a solid alternative.

Still, if you can get the Sergeant, I recommend it.

The Sergeant is the second of the more voluptuous Costume kits, using mostly the same mold as its predecessor, Aider, this time in Color C skin and a bat motif.
This kit only includes a torso, hairstyle (and head without faces), shoes and ringparts. The Sister used in the promotional images is Sestieh (face, limbs and gun).

Aesthetics:
Despite being a recolor of Aider, this time the outfit mimics that of a sci-fi military police or space-patrol officer, in a somewhat villainous color scheme, with bits of white on a black outfit, dark red accents and transparent red ring parts. It has the same puffy sleeves (upper biceps), but this time the hips and thighs are black, forgoing the garter-belt look. There's a dark red bat emblem on her extremely generous flotation devices (or maybe space buoys?).

The costume's headpiece is a side cap with small bat ears, though you could easily identify them as a lot of other things, such as small dog or horse ears (useful for an Uma-musume cosplay).
It also comes with hip armor and a pair of large unique shoes with 3mm holes under the heels (Aider and Sprint have different kinds).

The included hair is light grey with very long and elaborate twin tails.

Compatibility:
This is a fairly large torso, so it's best paired with some of the bigger limbs (Sestieh, Belveria, Rishetta and many others).

As mentioned the Sergeant is a recolor of the Aider mold (Color A) and the Sprint costume (Color B), so the body parts are inherently interchangeable, but since the colors don't have much overlap and don't share any skin colors, it's limited what actually matches - Aider has black sides, so if you want an even darker Sergeant uniform, you can swap those. Or, alternatively, if you want more white on her, you can use some of the white parts from the Sprint costume.

The Sergeant's bust is the peg and dual tabs style, so there are a lot of alternatives out there, if you wanted a different skin color facing forwards - However, you'll need one of the other two kits to swap out the bare skin on the back.

If you want to stick with a Color C face plate, options are fairly limited. You have:
Luluce (and Luluce Lily Wear) with brown eyes
Siana-Amarcia with blue or amethyst eyes
Ilshana with lavender eyes (lower set to look younger)
Sestieh with cyan eyes
Marical with pink eyes
Myasti with red/brown eyes

Changing the hair at the same time would probably do a lot to make the model look more cohesive.

Conclusion:
Sergeant is a huge visual upgrade on Aider, of which the latter has mismatching product images (the colors are very different shades of pink).
It just looks like a more fun outfit with a solid theme and the much simpler color scheme of black/white with a bit of red, looks great.

The downside is the hard-to-match skin color and finding the right limbs. Sestieh, again, just seems to be the best option with her white arms and black legs. Alternatively the bare Color C limbs also fit just fine, but those are hard to get a hold of.

Some of the promotional images seem to use water slide decals eyes on blank Color C face plates, but getting a hold of those sheets is also difficult. Still, if you can get them, that's a solid alternative.

Still, if you can get the Sergeant, I recommend it.