Burlington no-longer-Coat-Factory has a few newish crappy knockoffs of minor non-Transformers-brand toys out this year, and still has the set with the "not even close to Bumblebee" paired with really bad oversized Legion class Optimus Prime and RotF Megatron.
Here comes a direct copy of Threezero Transformer Revenge of the Fallen DLX Optimus Prime. Compared to the original threezero, it modified the head, increased the pattern on the chest and changed to movable hands.
Just got my clear KO SS Sentinel Prime in the post. I had to unscrew the left knee joint and put it the right way round, shave off some extra plastic on the left elbow (which was impeding the mushroom joint) and file away some extra plastic on one of the tyres. Unlike the regular version of this KO, this didn't come with the extra, downsized upgrade kit weapons.
(Note: - The clear/white Autobot symbols are reprolabels)
I also noticed that the official version has a fold-up "crane" on the back of the robot, whereas the KO version doesn't.
"Lewin Resources", the company behind the extremely oversized (and arguably, overpriced) MP10 Optimus Prime figures (including an oversized "Captain America Optimus Prime") are possibly releasing a gargantuan OSKO Metroplex, based mainly on the Hastak WFC, titan-class Metroplex figure.
The video below (courtesy of BensKOllectibles' YouTube channel and the one he posted at ShowZ's discord group) features a 3D render of their design: