Hephaestus is a very intelligent being, which he gets from his parents. He uses his intelligence to create technology that has helped the gods and goddesses of Mount Olympus greatly. Hephaestus has created the chariot for Achilles for battle in the Siege of Troy (as seen in the photo above). Hephaestus built various pieces of armor and weapons like Zeus's thunderbolts, Athena's spear, Poseidon's trident, and many more. Along with making armor, he built various palaces for the gods. The gods and goddesses practically relied on Hephaestus and his workers for all of their weapons, armor, and homes. If it weren't for Hephaestus, Mount Olympus would be drastically different and most likely not as advanced as they were.
Hephaestus has to walk with a walker because he broke both of his legs after being thrown off Mount Olympus by Hera. Hephaestus can be underestimated due to his size and form; compared to the other gods he is quite small. He can also be crafty and vindictive. Forgiveness doesn't come easily to Hephaestus, so instead he chooses the path of revenge. In the story of Hera and Hephaestus, Hephaestus makes an inescapable chair for Hera in order to get revenge for her throwing him off of Mount Olympus. Hephaestus has always been a lightweight drinker since he was very young. This comes into effect when Dionysus and Hephaestus meet. All gods and goddess's have weaknesses, Hephaestus was born with them. It affects his everyday life and relationships with the other gods/goddesses.