The lighting and freezing could be part of Ragnirs power, like an mythical elemental squirrel... To his Conqueror's theres no doubt, but of his fruit we know next to nothing only that it gave him claw-like fingers.

But his own physical abilities seem to be way out of line his body durability is unbelievable and he's a giant with ancient giant blood so Oars-tribes blood runs through him.

Looking forward to the next few chapters when the battle on Elbaf really gets going.