Sentinel from the Fortnite line in the Squad Mode assortment made by Jazwares in 2020.
You can buy from Amazon.
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Orbot from the Sonic Boom line made by Tomy Toys in 2014ish. He has zero articulation and is really just good as a background robot.
Ammobot 04 from the World Peacekeepers line made by M&C Toy Centre in 2015.
The best place to buy Ammobots is direct from the manufacturer M&C Toy Centre.
Rosie from the Hanna Barbera line made by Jazwares in 2012.
This one is a pretty obscure figure and I couldn’t find a place to buy one anymore. eBay is probably your best bet.
The Golden edition of R2-D2 from the Star Wars line made by Hasbro in 2019.
A.I.M from the Fortnite line made by Jazwares in 2019. A.I.M. was packaged in the Early Survival Game Kit assortment.
A.I.M. and all the Fortnite figures can be found in the 1:18 Archive’s Fortnite Character Guide.
Since this figure is fairly new it can be found easily on Amazon.
Sp//dr from the Spider-Man: Into The Spider-Verse line made by Hasbro in 2018. He has minimal articulation due to being part of a line made for children.
You can buy from Amazon.
Slomo from the Space Precinct line made by Vivid Imaginations in 1994.
You can find one pretty easily from eBay. Which is where I obtained mine.