I posted this article on the Articles section, but I know people normally sift through the forums instead of searching through articles. I originally posted this to the Path of the Shaman articles as well. I have updated it since it was created. Enjoy!
The Titans Themselves were born from Oranous and Gaia. They were the rulers before the Olympians were born, and came to play.
Kronos is the Titan of time and the ruler of the Golden Age, the King before Zeus. You all are aware of the story about how Kronos castrated Ouranos and threw his remains into the sea, also how Kronos was paranoid, and ended up swallowing all of His kids, and Rhea gave a stone swaddled in cloth to Kronos, thinking it was His other kid. Eventually Kronos was overthrown, and resides in Tartarus.
Rhea is married to Kronos, and is the mother of Zeus, Hades, Poseidon, Hestia, and Demeter. She's also identified as the Mother of the Gods, since Rhea's offspring is almost half of the Olympians. She's often seen accompanied by lions. Her actual domain is female fertility.
Theia is the Titan of Sight. Actually, "thea" in Greek means "sight". She was also, by extension, the goddess who endowed gold, silver and gems with their natural value and beauty.
Mnemosyne is the Titan of memory, and the remembrance of words. She also did the dirty birdy with Zeus, and ended up giving birth to the Mousai (Muses).
I've had a personal experience with Mnemosyne. I was having a bad experience, during the years when I was bonkers crazy, I prayed to Her and worked with Her, to help me put that memory behind me. She is absolutely lovely, and is awesome to work with. I don't know why so many people think the Titans are bad, or "evil". Most of them want to help mankind. Even Prometheus is labeled as the "Savior of Man". Anywho, Mnemosyne did help me put that stuff behind me, and bring new memories to remember in my life.
Prometheus is the Titan of forethought and Counsel. Prometheus and his brother, Epimetheus (meaning afterthought ) , were given the task to create man. You know the old saying "Think before you act"? Well, Epimetheus here resides overt he actions, thoughts, and words you've projected without thinking. Epimetheus created Man out of mud, and Prometheus, out of clay. The mud beings were a lot more slushier and non-effective than the clay Men. The Clay Men could be shaped and formed into the beings that modeled the Gods.
Prometheus tricked Zeus out of the best portion of sacrificial offerings, or feasts. He wrapped two parts of the offering in pieces of skin: The bones and the fat, with the stomach on the top, and in the other sac, the rich meats. Out of fairness, He offered them to Zeus and told Him to choose one. Zeus chose the bones and the fat, and was angered with Prometheus when He was tricked. Another thing that made Zeus not happy with Prometheus, is that he gave fire to Man. Fire was absolutely sacred to the Gods, and was held in Hestia's Hearth, for Their own keeping. He carried it to Man hidden in a fennel stalk (can you believe that? Something that burns, doesn't actually burn). Zeus had enough with His rebellious acts, so Zeus chained Prometheus to a rock under Mount Kaukasos where the eagle was set to feed off of his liver (some say liver, some say heart, lungs, just internal organs in general). Later, in the myths, Prometheus was freed by Hercules.
Iapetus was the Titan of the mortal life-span. Iapetus and his brothers conspired against their father, preparing an ambush for him as he descended to lie with Earth. Crius, Coeus, Hyperion and Iapetus were posted at the four corners of the world where they seized hold of the Ouranos and held him fast, while Kronos, hidden in the center, castrated him with a sickle.
Part two will come soon!
(credit goes to my brain, and some from Theoi.com)