Complex sentence: Roadblock is one of the biggest and strongest members of G.I. Joe, able to carry a fully loaded M2 Browning machine gun as a personal weapon, which can weigh up to 134 lbs, and usually requires a dedicated squad to transport and operate.
Split into simpler sentences: Roadblock is one of the biggest and strongest members of G.I. Joe. He often carries a fully loaded M2 Browning machine gun as a personal weapon, which can weigh up to 134 lbs and usually requires a dedicated squad to transport and operate.