Gees, it's like picking a favorite child.  And I've been roleplaying for about 25 years so I couldn't even tell you how many chars I've made over the years.  Hmmm, I am just going to list those that stick out in my head and keep in mind the RPGs they're in don't even exist anymore (like I couldn't even link them).  Try to go in chronological order too, but no guarantees.

1. Cassandra- The longest RPG I was ever a part of what in Yahoo! Clubs/Groups.  We finished one arc and almost completed its 'sequel'.  Cassandra was the first char I created for that RPG.  The basic plot was a group of 'young folk' of different races who save the universe basically.  I use young losely because a few of the chars appear young but are well over 100 years old lol.  Cassandra is one of the allies of this group of "Chosen who will save the Universe" and she's a sorceress.  Everyone calls her Cassie and ends up playing a big role in the RPG and ends up falling in love with one of the main cast members, a Vampire named Trent.  In the 2nd season, after a time jump, that story picks up after another 100 years (Cassie is granted immortality due to her role in the previous arc).  She and Trent become support chars since it's the Kids of the heroes of the first season who are up to bat.  I drew A LOT of art for this RPG.  I loved this RPG so much and was sad when it ended.

2. Taura Langstan- In Roleplay Gateway, one of my fav chars I created was Taura because I rarely play a char like this- a highly intellectual young woman who could kick your ass and comes from a Wealthy family.  There was only 6 of us players with 6 main chars (3 girls and 3 guys), but we really got along and that made the RPG so enjoyable.  Taura is close friends with 2 other chars, one who she is very protective of, including her other good friend.  Main plot was the Prince of the Hell falls for a mortal girl and goes to Earth in disguise with 2 of his closest friends, the pose as brothers, and attend the same high school as the girls.  So yeah it's a love story where the demons are good lol.  Sadly the RPG started dying because one player joined the military and while he said he'd try to keep up, I knew that was highly unlikely (I come from a military family) but he didn't and a few others just suddenly stopped roleplaying.

3. Alayna Renoldi- Last one.  Alayna came from a Historical romance RPG with fantastical elements to it.  Story is about this group of Fallen Angels and their soulmates finding redemption for one last time.  The Angels are all male who fell in love with these young maidens.  However they betray their wedding vows, but Heaven gives them another chance since the wives were innocent, but in their next lives they cheat on their husbands and the cycle continues until the 1860s England which is the present time of the RPG.  In this current time, only one of the former maidens (who has found her soulmate again and did marry him) and her best friend (who's actually a seer) know about her past lives through the seer's tarot readings.  Plus all of the chars dream about their past lives too.  So in order to save her marriage, soul, and the others, the Wife has a ball and ends up inviting all of the main cast.  Alayna is one of these chars.  She's VERY cold-hearted wealthy young window due to her late husband's infidelity and her miscarriages.  I loved playing Alayna for she's someone you don't want to mess with but I was hoping she would heal in th end, sadly the RPG did die out after a few tries.