I would just allow the character to use a bastard sword like a two-handed sword and call it a day. But I would keep in mind that that 3' tall character is strong enough to pick up two full-grown human men. I do not think the character would look any more foolish wielding a 6' sword as he would carrying two men over his shouders around a tavern.
Monolith, the Living Titan
"The HERO System is not designed to represent real life. The game is designed to represent heroic fiction as presented in comics, novels, television, and movies."
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