Anaklusmos (Greek for Riptide) is the prized sword of Percy Jackson that is made of Celestial Bronze, a material that is only deadly to gods, demigods, Titans, Giants, and monsters. It does not affect mortals, as it just passes through them harmlessly.
Riptide is only wielded by a certain few in the series; Percy (its current owner) uses it as his main weapon; Hercules used it to defeat the dragon, Ladon and Chiron possessed it at Yancy Academy before he gave it to Percy. Chiron also hinted that the sword has had other owners, as he claimed it had a long and tragic history.
Percy is first given Riptide to defeat the Fury, Alecto, who was disguised as Percy’s pre-algebra teacher in his school. After the battle however, Chiron, disguised as a teacher called Mr. Brunner, takes it back and tells Percy to bring his own writing utensil next time, trying to convince Percy into thinking the fight never happened. Then, just before Percy leaves for his quest, Chiron gives it to him, saying that the sword has “a long and tragic past.” Chiron also shows Percy that Riptide/Anaklusmos can never be lost and will always reappear in his pocket. Percy has used the sword ever since against monsters and whoever else he’s battled.
In its dormant form, it’s a disposable ballpoint pen that reads Anaklusmos on the side when not in use. Once the pen is uncapped, it transforms into its true sword form. Riptide is about 3 feet long (including the hilt) and weighs about 5 pounds with a perfect balance that Percy wields well.
Credit : Fandom
Picture Credit : Google