Johnny can shapeshift into basically
any kind of animal, and even other people. While it might seem basic, this will actually pay dividends for Johnny here, specifically if Luffy were to grab Johnny (which is already difficult). Johnny can shapeshift into a smaller animal, or an animal that's very elusive to escape Luffy's grasp, so LS isn't as big of a factor as people would think.
An ability that was mentioned briefly, but was then ignored. Luffy is weak to heat/fire attacks, so Johnny can perfectly utilize this to do damage to Luffy (though the explosion part of the attack won't do damage thanks to Luffy's Blunt Force Resistance, the heat of the explosion will certainly do damage).
Fairly simple. It won't do much, but it would give Johnny more mobility, though I will mention Flight again soon.
Johnny has used this before. He can use this to freeze Luffy solid, and I haven't heard anyone mention Luffy resisting Ice attacks, so this should be fair game.
As shown in the links, Johnny can transform into what is called "
Heat Mode." He transforms into a coat of flames (something Luffy is weak to), and Johnny becomes hot enough
to melt all the ice from Porkbelly. Also, remember what I said that I would mention Flight again soon? Well,
it also seems to increase his flight speed, so Johnny'll become even harder to catch, and he can do some solid damage to Luffy as well.
Already explained before. Johnny can basically track wherever Luffy is.
Johnny using these will be useful since lasers produce heat, which is something Luffy is weak to.
Don't know if Electricity Manip is blunt, but if it's not, then Johnny can utilize this (just looked it up, and rubber is resistant to electricity, so Johnny can't use this).
And lastly, Invisibility. This was argued before, and Luffy can counter this, but this will startle Luffy initially, which gives Johnny an opening to attack.
That's all (
I can sense Reaper getting ready to debunk every single argument here).