MrGuardian/MrGuardianScout/Terrako/MrGuardianStalker

 MrGuardian 

MrSmartguy's alternate version of a Guardian Stalker that he developed at Hateno Ancient Tech Lab. This Guardian was more powerful and was capable of outsmarting Link.

MrGuardianScout

MrSmartguy' s reactivated Guardian Scout IV that he also made smarter.

 Terrako 

Terrako was a miniature, egg-shaped Guardian that, unlike the others, was not activated by MrSmartguy and has no offensive or defensive

capabilities. It can open time portals as well.

 MrGuardianStalker 

A Guardian that was just normal but tinkered with a bit by MrSmartguy to be more powerful.