Here's Tomy's "Posed Plush" for classic Knuckles. They seem to be trying 'pose plushes' for both the classic & modern line. This doll looks like the fists are stitched together in front to look like the "fist knock" Knuckles art where he's hitting the fronts of his fists together.
The plush is ok, certainly the face is good here, with nothing really out of proportion, good long enough spikes, embroidered details & good size for the nose. The fists are a bit small & the glove cuffs/socks aren't stitched down properly (you can see them lifting away) but with all the other details right & a pose that doesn't look strange/un-proportional, this looks like another good entry into their line.