In the sense that the Biolizard is the prototype of Project: Shadow, it can be seen as Shadow the Hedgehog's "older sibling". It's not stated if the Biolizard was also created with the genes from Black Doom, however it is unlikely. Following that, Shadow and the Biolizard are probably not biologically related.
No, Shadow the hedgehog was created 50 years ago by Dr Eggman's grandfather, Professor Gerald Robotnik.
No, they are not related. Shadow was created by a relative to Dr. Eggman.
even know shadow and amy are both hedgehogs no ; they are not related and amy can swim but shadow can not
No, shadow the hedgehog is black.
Shadow and Maria are not biologically related, however it's assumed that Shadow and Maria shared a brother-sister bond.
Shadow is a blato hedgehog.
yes shadow the hedgehog was created by eggman
shadow the hedgehog
Shadow the Hedgehog
Shadow the Hedgehog
Shadow the Hedgehog
No shadow the hedgehog does not have a girlfriend