You best bet is going to be looking through art for:
Busou Shinki
Hyperdimension Neptunia
Trigger Heart Exelica
I remember finding someone on pixiv who does Mecha Musume OCs I'll see if i can find them.
Edit:
https://www.pixiv.net/member_illust.php?id=572261
Might have more idk.
Busou Shinki
Hyperdimension Neptunia
Trigger Heart Exelica
I remember finding someone on pixiv who does Mecha Musume OCs I'll see if i can find them.
Edit:
https://www.pixiv.net/member_illust.php?id=572261
Might have more idk.