#200 A knight in his/her own right.

The below picture shows the dynamic duo of the city Z . The duo of X and Y was inspired from the dynamic duo of another city, to such an extent that they even had a car and a base of the same sort.
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In pre-crisis,the first hero who chose the identity of X under special circumstances happens to be a native of the place where Z is located, later "hero"s look-alike assumed the identity of X and then atlast the boy wonder renamed himself as X .
Post crisis too, a lot of characters have assumed the identity of X to fight crime at different places.The current X happens to be the foster son of the "hero".
Based on X's fame and popularity,a monthly solo series was released in which,he patrols Gotham city's neighbouring municipality of B.
Identify X,Y, Z and B.

Cracked by Siddarth Pai