There is no way of knowing. Tornadoes have probably been around since almost as long as earth has had an atmosphere, so nobody would have been around to see the first one.
A tornado
It would depend on the severity of the tornado.
a funnel
A tornado looks either looks tall and skiny, short and fat,or medium sized.
Without a funnel, a tornado will likely appear as a whirling cloud of dust or debris. If there is not enough of that present, then the tornado will be invisible.
Asia , i am guessing
Tornadoes come in different shapes, and the shape changes during the life of the tornado. Some tornadoes are like thin tubes or ropes, some look like large wedges. If it is wrapped in rain, or there isn't enough light, it can be hard to see a tornado. Sometimes clouds may look like a tornado but aren't, so looking for other clues like rotation is important.
It is rather unusual for a tornado to look like spaghetti. If a tornado does take on such an appearance it most likely means the tornado is dissipating or "roping out." It is believed that this occurs when cold air chokes of the warm air that feeds the mesocyclone, the rotating updraft that drives the tornado. When this happens the tornado begins to shrink and weaken. Winds within the parent storm can somtimes cause a tornado at this stage to bend into unusual shapes.
Within the funnel it looks like a very thick, fast-moving fog. The center of the tornado may be clear, giving the appearance of a tube.
it depends on what the radar is measuring, but usually it will look something like an animal cell, with the tornado being the nucleus.
Its like a dark purple tornado, accept it stays in one spot.
A tornado is a vortex and may also contain vortices. A vortex is a rotating body of liquid or gass. In a tornado, the vortex is made visible by condensation or dust and debris. It may look like a cone, tapering appendage, or column attatched to the clouds, or may take the appearance of a tube or swirling mass of dust.