Blue Kryptonite was a variant of Kryptonite created using the Duplicator Ray on a piece of Green Kryptonite which Superman used to halt an army of advancing Bizarros. Blue kryptonite only affected Bizarros and was harmless to humans and Kryptonians.
Blue kryptonite was the opposite to the more common green variety and made Kryptonian-based Bizarros highly intelligent, a process that scared them.
An enemy from the Anti-Superman Army dubbed the Blue K-Man stated that his kryptonite radiation wavelength was cancerous to the soul. Xa-Du, the Phantom King, recoiled out of fear while in the Kryptonite Man's presence because he was an ethereal being from the Phantom Zone, and blue kryptonite radiation caused spiritual death.
Blue kryptonite suppressed Clark's powers, at least for a time. During the effects, Clark was also immune to the symptoms of green kryptonite. The blue kryptonite was forged into Jor-El's victory ring which was presented to him when he first became a member of the Kryptonian Science Council. Clark's resurrected mother, Lara Lor-Van, gave him the victory ring while explaining that it was a Kryptonian tradition to pass the victory ring onto the firstborn son when he came of age. Unknown to her, the ring had been a trap set by Zor-El to strip Clark of his powers. Blue kryptonite was used to overload and kill Bizarro.
Blue kryptonite was used by Superman to reverse the effects of an exposure to Red Kryptonite that caused him to rapidly age. Superman later claimed that when the radiation of red kryptonite passes through his blue suit it turns into blue kryptonite.
Crisis on Two Earths
Links and References
This project page needs to be cleaned up.
This article needs maintenance and organization, as it may have become cluttered or confusing. Its heart is in a good place, it's just a little special. Won't you please help out an article in need? This template will categorize articles that include it into the Clean Up task category.