Unblockable

What it is

Anything unblockable is something for which it is not possible to block.

Summary

Things that are unblockable standing (having low hitboxes), things that are unblockable crouching (having overhead hitboxes), and things that are midair unblockable may come to mind, but “unblockable” on its own basically means that something isn’t blockable by any kind of block.

Kinds

There are ways to rationalize why something isn’t blockable; they basically fall into these types:

1. The move just barrels right on through the block (such as Ralf’s Galactica Phantom).
2. The move itself does not allow a character to go into a guard pose, making them unblockable in effect (e.g., most throws).
3. The move attacks with an overhead and low hitbox at the same time (forced mixup; can also occur with more than one move hitting at the same time).
4. The move attacks the front and back at the same time (forced crossup; can also occur with more than one move hitting at the same time).

Some of these can be activated through bugs or oversights. #2 can be used in tandem with a projectile in some games in the KOF series, and #4 can be used with certain projectile setups in the first revision of Street Fighter III: 3rd Strike (but not the second one).