[Eyeshield]

Hey Guys
I am new here and I wanted to start a thread about anime people dont quite remember. This is happening to me and its driving me nuts. There was an anime I saw as a kid where there was a boy whose father was kidnapped, and to help him out he had a friend that was a green horse. He had other companions, but that horse was special as it would sometimes give him shots of 'courage' to help him overcome some situations. Does anyone remember an anime along those lines?

Thanks
Eyeshield