I draw 4 characters with Super Saiyajin's aura but it's not random :  
-Rainbow Dash : Super Saiyajin Blue Kaioken because it's a form with more colors than usual and it's a form very powerful and costs many stamina, and Dash, as a atlethic, it fits her well.  
-Pinkie Pie : Super Saiyajin Ikari for the "berserk" side, no one can stop a Pinkie x)  
-Rarity : Super Saiyajin Rosé because the user of this form, Black Goku loves this form because this is majestic, so as Rarity.  
-Fluttershy : Super Saiyajin God for the pure side, to have this form, a saiyajin needs a pure heart (Like we see in Battle of Gods for Goku, DBZ Kakarot for Vegeta (even it can't count but you get the point) and Super Dragon Ball Heroes Universe Mission for Trunks Xeno) x)