At this point, however, we've been able to at least agree on the The Standard Model, comprised of Fermions, Bosons, and the Four Fundamental Forces.

SUSY, pushes the SM further, saying that nothing would change if you swapped Bosons and Fermions, which indicates another set of mirror particles, however, no particles fit the properties of these mirror particles, and there's no certainty about what energy level (TeV or Gev) these Superpartner particles should/will appear at.

Supersymmetry proposes that the laws of nature remain consistent if you swap Bosons and Fermions, meaning each of the 25 elementary particles, whatever camp they fall into, must have a partner of the other type. Susy, however doesn't mention the mass of these particles, and they have not been revealed at currently achievable TeV scales.

Supersymmetry proposes that the laws of nature remain consistent if you swap Bosons and Fermions, meaning each of the 25 elementary particles, whatever camp they fall into, must have a partner of the other type.

Also, Fermions come in three generations of similar particles, with increasingly higher masses.