Wolverine and Batman drawings

I have been doing art for the most part of my life, and the biggest fun I had when I was a younger lad was drawing my favorite super heroes and comic characters. Wolvarine and Batman were the best to draw!
These two illustrations are old (2005) but I still enjoy looking at them. The framed Wolvarine was a gift to my cousin and it is much bigger than the batman one (I forgot the exact measurements but the batman drawing was a bit bigger than A4 size).
Both of them were done with charcoal on heavy illustration paper, and both were inspired by posters and comic cards.