Have you ever wondered what the worst groove in Capcom vs. SNK 2 is? Most would argue that it is S-Groove. While there are some interesting tools within the groove, including dodging and meter charging, there are many issues with it, including only having access to level 1 supers until you are in red health territory. It essentially makes the groove similar to C-Groove in functionality, but much weaker in practice.
However, its strengths and limitations can actually play as an advantage to several characters, including Kyo, Benimaru, and Athena. Silentscope explains how — as well as how to use everything within the groove — in this tutorial.