You have no culture/cultural identity of your own, so you readily adopt the culture and behavior of those you admire
Despite their size and fearsome reputation, Half-Giants tend to possess an almost child like friendliness and curiosity
Half-Giants also have a ferocious temper, only a fool would tempt a Half-Giant’s rage
Half-Giants rarely have the patience or mental facilities for learning magic or psionics, though the occasional clever Half-Giant might dabble with Metacreativity or Psychokinesis and become a truly terrifying psychic warrior
Half-Giants rarely become leaders, more often than not they follow an admired or charismatic friend into adventure, or whomever they find particularly interesting
Half-Giants require twice as much food and water as other demihumans
Your large size sometimes causes you to accidentally break human-sized dwellings and furniture
Most Half-Giants live their lives as slave soldiers, though the more ambitious and adventurous among them sell their services as highly sought after mercenaries
If you meet someone interesting enough, you might completely abandon whatever it is you’re doing to follow them
Legend has it a great Sorcerer King created your race long ago.