The Pivot & Co.

For completion's sake, I guess I still have to mention that the Pivot is by Original Tradition likened to Freya from Ride of the Valkyrie; The Valkyrie however is just that. The Ninja however is likened to the Kunoichi from the Studio F.O.W. trilogy and 'the Rose' is very much Rose from Street Fighter.
The Tentacles furthermore are also 'the Tentacle Monster' - though it makes not much difference I presume.