The Brave and the Bold, Vol. 3 #8 (2008)

Wally's Choice
As the Challengers of the Unknown continue to plumb the depths of the Book of Destiny, they read a tale of The Flash and his children. Fearful that Iris and Jai's powers are taking a toll on their bodies, Wally and Linda take the twins to Prague home of Dr. Niles Caulder and the Doom Patrol. Caulder's frequent invitations do little to ease Wally's misgivings about the Chief's reputation of turning 'freaks' into heroes. But when Dr. Caulder reveals that he believes the Tornado Twins' powers are ultimately going to kill them, Wally and Linda feel forced to accept his help.
Release Date: 2008