If I had to guess at a glance, the pipe-looking things are to guard the rotor against striking the ground. If you mean the things hanging off them, I’d guess that they’re inflatated bladders to spread out the time of impact when landing.
EDIT: Rotor guy is apparently flying a de Lackner HZ-1 Aerocycle, and yeah, that’s apparently what they’re for:
The aircraft’s landing gear consisted of airbags at the end of each arm of the frame along with a large rubber float in the middle, providing amphibious capability,[5] although this arrangement was later replaced by a pair of conventional helicopter-type skids.[8]
According the the article linked it didn’t even pass the testing phase, because surprise-surprise guys kept crashing. That was the 50’s in peacetime, and the whole thing probably started because helicopters were the hype of the era and there was a lot of funding.
Guy on the right doesn’t look like he has a free hand to shoot, plus he’s on what’s basically a portable version of one of the Mortal Kombat pit levels
The one on the right looks like it might plausibly be able to fly under extremely optimal conditions. The one on the left is a complete shitpost of an idea.