All of these characters were piloted in Season 17 via another player account sharing and using their account after these players paid to be boosted up.

http://us.battle.net/wow/en/character/maelstrom/Fa%C3%ACd/simple
http://us.battle.net/wow/en/character/ysondre/Bladeofdoom/simple
http://us.battle.net/wow/en/character/proudmoore/Saleixa/simple
http://us.battle.net/wow/en/character/tichondrius/Derp%C3%ADn/simple
http://us.battle.net/wow/en/character/sargeras/Slickedheals/simple
http://us.battle.net/wow/en/character/tichondrius/Paladiq/simple
http://us.battle.net/wow/en/character/akama/Laser/simple
http://us.battle.net/wow/en/character/tichondrius/Destr%C3%BCcti%C3%B8%C3%B1/simple
http://us.battle.net/wow/en/character/emerald-dream/Aer%C3%B8w/advanced
http://us.battle.net/wow/en/character/darkspear/M%C3%A4xim%C3%BCs/advanced
http://us.battle.net/wow/en/character/tichondrius/Synth%C3%A9tic/advanced
http://us.battle.net/wow/en/character/frostmourne/Danoxx/advanced
http://us.battle.net/wow/en/character/darkspear/Nightelfo/advanced
http://us.battle.net/wow/en/character/tichondrius/Getrightx/advanced
http://us.battle.net/wow/en/character/tichondrius/Nikonoko/advanced
http://us.battle.net/wow/en/character/sargeras/Sheluvsdp/advanced
http://us.battle.net/wow/en/character/gorefiend/Dontujabme/advanced
http://us.battle.net/wow/en/character/kelthuzad/Shakeys/advanced
http://us.battle.net/wow/en/character/kelthuzad/Mts/advanced
http://us.battle.net/wow/en/character/drenden/Reem/advanced
http://us.battle.net/wow/en/character/frostmourne/Allenz/advanced
http://us.battle.net/wow/en/character/tichondrius/Winside/advanced
http://us.battle.net/wow/en/character/Sargeras/Logranth/advanced
http://us.battle.net/wow/en/character/tichondrius/Dxb/advanced
http://us.battle.net/wow/en/character/Kel'thuzad/Tricky/advanced
http://us.battle.net/wow/en/character/sargeras/Tfvbhyg/advanced
http://us.battle.net/wow/en/character/tichondrius/Defainted/advanced
http://us.battle.net/wow/en/character/darkspear/Rehnano/advanced
http://us.battle.net/wow/en/character/kelthuzad/Nvoux/advanced
http://us.battle.net/wow/en/character/tichondrius/Huntspirit/advanced
http://us.battle.net/wow/en/character/gnomeregan/Agitate/advanced
http://us.battle.net/wow/en/character/tichondrius/Amoneylol/advanced
http://us.battle.net/wow/en/character/darkspear/Hasslejr/advanced
http://us.battle.net/wow/en/character/illidan/Cavenicula/advanced
http://us.battle.net/wow/en/character/zuljin/Hal%C3%B8skittyqt/advanced
http://us.battle.net/wow/en/character/sargeras/Mcrend/advanced
http://us.battle.net/wow/en/character/sargeras/Dizzyswift/advanced
http://us.battle.net/wow/en/character/illidan/Jackandkill/advanced
http://us.battle.net/wow/en/character/proudmoore/Bandaidshere/advanced
http://us.battle.net/wow/en/character/tichondrius/Cslangodx/advanced
http://us.battle.net/wow/en/character/runetotem/Treeps/advanced
http://us.battle.net/wow/en/character/tichondrius/Rai%C3%A7hu/advanced
http://us.battle.net/wow/en/character/kelthuzad/Tiptoewing/advanced
http://us.battle.net/wow/en/character/hydraxis/Oohiji/advanced
http://us.battle.net/wow/en/character/kelthuzad/Hovah/advanced
http://us.battle.net/wow/en/character/scarlet-crusade/Kris/advanced
http://us.battle.net/wow/en/character/quelthalas/Irond%C3%A6d/advanced
http://us.battle.net/wow/en/character/sargeras/Zokyr/advanced
http://us.battle.net/wow/en/character/darkspear/Omii/advanced
http://us.battle.net/wow/en/character/drenden/Madeuwet/advanced
http://us.battle.net/wow/en/character/andorhal/Crilton/advanced
http://us.battle.net/wow/en/character/bleeding-hollow/Elevilbaby/achievement#95:165
http://us.battle.net/wow/en/character/proudmoore/Agorinaw/advanced
http://us.battle.net/wow/en/character/tichondrius/Pillarhumpx/advanced
http://us.battle.net/wow/en/character/kelthuzad/Buttafingerz/advanced
http://us.battle.net/wow/en/character/tichondrius/Tygasoraw/advanced
http://us.battle.net/wow/en/character/blackrock/Kaib%C3%A2/advanced
http://us.battle.net/wow/en/character/tichondrius/Sethcurry/advanced
http://us.battle.net/wow/en/character/aerie-peak/Aleorin/advanced
http://us.battle.net/wow/en/character/nemesis/Aurora/advanced
http://us.battle.net/wow/en/character/sargeras/Wrootz/advanced
http://us.battle.net/wow/en/character/kelthuzad/Nicknelx/advanced
http://us.battle.net/wow/en/character/jaedenar/Babzqt/advanced
http://us.battle.net/wow/en/character/tichondrius/Ivanreturns/advanced
http://us.battle.net/wow/en/character/misha/Frozenbrood/advanced
http://us.battle.net/wow/en/character/darkspear/Flopsfordays/advanced
http://us.battle.net/wow/en/character/kelthuzad/Collage/advanced