Spazm is a prop made by Morbid Enterprises, new for the 2005 Halloween season.
Morbid Enterprises has made a few versions of the 'Spazm' prop.
One version has Spazm's straitjacket made from actually cloth, rather than latex. The figure also appears skinnier in this version.
Introduced in 2016 is the mini Spazm prop.