Giants are a really inconsistent subtype lorewise so far.
Jungle Giant is called a giant, looks like a walking tree (the only plant-ish looking character in wp so far), but actually has the subtype beast.
Hidden by Clouds looks very giantish, has reach, but is also a beast.
Force against the Law looks like a huge tiger-beastish character, way more than Jungle Giant or Hidden by Clouds imo, but is a giant....so yeah, that is a really strange subtype.
And now Shockwave Giant doesnt have reach and an entirely new look.