This is the final instalment of the Tales of Arcadia, a trilogy of shows set in the town of Arcadia Oaks, California. The previous two shows were Trollhunters: Tales of Arcadia (2016) and 3Below: Tales of Arcadia (2018).
"Nari" is the Korean word for "lily", which makes it a fitting name for a plant/forest-based sorcerer.
If you look closely, Hisirdoux, or Douxie, has a small scar on his hand.
Douxie, voiced by Colin O'Donoghue, is a talented guitar player with a real passion for rock n roll. O'Donoghue is also a very skilled guitarist in real life.
This is the second show starring Colin O'Donoghue which features an ethically questionable King Arthur and a broken Excalibur, the first one being season 5 of ABC's "Once Upon a Time."