The Tatsunoko vs. Capcom guide for Ippatsuman has been posted. This article was written by Nyoronoru. Here's a grab from the page.
Ippatsuman is another top-rated character from the Tatsunoko vs. Capcom universe. He has powerful moves, a good projectile, a fantastic anti-air game, damaging reset combos, and a great dash.
Where he is weak is the recovery lag on some of his normal moves, his poor assist, lack of mixups, and the semi-poor reliability of his Gyakuten Home Run and Gyakuten-Oh Hyper moves.
With this guide posted, all of the character pages for the Tatsunoko vs. Capcom strategy guide have been added, sans the fighters that are exclusive to Ultimate All-Stars, all of whom will also be receiving their own guide pages in the future.
Also, you'll also be seeing more updates to the older guides along with some new information closer to when the game is released in late January 2010.