Hellsings Early attempts to Supress Ingegra's Mass (Patreon)

Integra seems to be able to add strength and muscle through sheer superhuman will, the limits of biology and physics be damned.  Hellsing has no real explanation for this - it neither seems magical nor physical, and because of that, attempts to suppress it are varied.

Seras Victoria stumbled upon her boss as one of the lower level restraints started to strain.  

At one point their chief scientists developed living metal cables that form a compressing cage around her body underneath the clothing. 

It's not enough.