Dunno who dis person but whomever she is, be a souperstah.
The rule in English with using whom vs. who is saying he/she (who) or him/her (whom) - whichever one flows more gramatically correctly is the best option. Going by that, let's take a loom at your statement here: "... him(/her)ever she is, be a souperstah."
I'm sorreh, sir, but as a protector of grammar, friendship, and all good things I'm going to have to send you to the LMBE prison for your crime against Gramar.
"Wise words by wise men write wise deeds in wise pen." —Lollimon the Wise
Dunno who dis person but whomever she is, be a souperstah.
The rule in English with using whom vs. who is saying he/she (who) or him/her (whom) - whichever one flows more gramatically correctly is the best option. Going by that, let's take a loom at your statement here: "... him(/her)ever she is, be a souperstah."
I'm sorreh, sir, but as a protector of grammar, friendship, and all good things I'm going to have to send you to the LMBE prison for your crime against Gramar.
Dunno who dis person but whomever she is, be a souperstah.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Dunno who dis person but whomever she is, be a souperstah.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Dunno who dis person but whomever she is, be a souperstah.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Dunno who dis person but whomever she is, be a souperstah.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Lot’s of people knew her as WarriorsFan12 on the LEGO Ninjago Galleries on LEGO.com, before they were closed down ( ). That’s the most information I can give you.
Not that many people...
Come on, give yourself a bit more credit than that!
I'm afraid so.XD 
). That’s the most information I can give you. 
). That’s the most information I can give you. 
). That’s the most information I can give you.