Yes Shadow is capable of crying, although this has only been seen once within the games, this happened in Sonic Adventure 2 in the Last Story. Amy reminded Shadow about his promise to Maria, which caused a single tear to be shed. The graphics may make it hard to be seen, but it is there.
In Sonic X's adaptation of Sonic Adventure 2, Shadow's tears are easier to be seen. Whilst the series is considered to be non-canon, the Project: Shadow saga do follow the events of Sonic Adventure 2, and as such, Shadow's behaviour overall can be seen as canon.
Yes, only one time in Sonic Adventure 2 when Amy reminded him of his promise to Maria, a single tear can be seen.
Maria was never a hedgehog, she was always a human. Though alot of people's artworks of her as a hedgehog may be so well done it may seem canon, it isn't and besides, her grandfather is human and so is Eggman, with some deformities, which would also make her completely human.
He's neutral, he isn't sad all the time but he isn't the kind to express joy, I do believe that he is thankful for people who care about him and not fear him. Even if one of the people is an annoying blue hedgehog.
Yes, many times he spares people. And Shadow was a "failed experiment" not the perfect killing machine like the "True" Shadow. If you've ever played Sonic Adventure 2 he is the 2nd to final and final boss in the last chapter.
Well, as much as I don't think that matters whether or not he makes waste, he most likely does. After all, every creature on the planet does. Besides, Sonic eats chili dogs, doesn't he? So where do you think that chili dog would be in 20 minutes?
None that have been shown.
No.
the freedom fighters doesn't know shadow the hedgehog
Yes, multiple times.
Shadow is a Hedgehog like Sonic the Hedgehog. He died but Dr. Robotnik (Eggman) made a Andriod copy of Shadow the Hedgehog. Shadow is always grumpy. But if he ever forgets who he is he will do anything to get his memory back. Even destroy Sonic the Hedgehog.
some day may be with a morttal hedgehog like him may be shadow does need a girlfriend
Nope.
No
dude never shadow is beast
mite be soon in a year or two
no he was created by Dr. Gerald Robotnik
Not in the actual games, last time I checked. A LOT in Fanfiction and the like.
Everything has its end, even though Shadow the Hedgehog said to be immortal, if he were to live until the world ended, he would die along with the world.