Translation of "Tantrums" in French

My son loves to throw temper tantrums in the supermarket.

Mon fils adore piquer des crises de nerfs au supermarché.

Over-sensitive about his royal status, prone to  tantrums… but in battle, as fearless as ever.

trop sensible à son statut royal, enclin aux crises de colère… mais au combat, aussi intrépide que jamais.