D&D 5e
This is my current 5e character, Johan Werper the VI. He is a cleric/paladin. He is the great-great-great-great-grandson of my first ever D&D character Johan Werper, the Cleric. Johan the First was followed by Johan the II (Paladin), Johan III (Cavalier), Johan IV (Cleric, Prestige Paladin 3e), Johan V (Paladin, multiclassed feat Cleric, 4e) and to the new generation.
It has been a real joy to have a multi-generational arc for my characters and great to play with this concept of the Lawful Good paladin across all generations of the D&D game. Each has given me something slightly different and all have been a blast to play.
Some of my other characters for 5e that jump between PCs and NPCs are Tayrn Nix, Half-elf Warlock (Fey Pact), Celeste Holmes, Human Wizard (Sage), Cassandra Killian, Human Sorcerer (Divne Soul), Jassic Winterhaven, Gnome Bard (College of Lore), Sasha, Cleric (Knowledge Domain), and Áedán Aamadu, Human Druid (Circle of the Land).
Old School Essentials
Some of my OSE include the druid couple Asabalom and Maryah and my Pagans Lars and Siân.
AD&D 2nd Edition
I have two I have been working with. I was just telling my oldest last night I need to pull them out again and do more with them. Both are AD&D 2nd Ed interpretations of a Witch, Goodwife Sinéad (Witch Kit) and Nida (witch of Hala/Witch of Rashemen kit)
DragonQuest
My character for this game is still Phygor.
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Of course, I do have to mention my iconic witch Larina, who gets stated up in every game I play.