Hey guys, I have been trying to think of a good character idea but for some reason can't. If you have any ideas for class and species or Backstory and background, please tell me. 

Some of my fave go to Characters. 

Extrodinarily creepy warlock who is actually the most pious and wholesome person you can meet and just come off as odd because they were raised in an area with lots of infernal influence.
Example from my table: A flabby toadlike tiefling with one horn who chants in infernal about "Lathadar" but then people figure out he is from Amn, and he could only worship good gods in little esoteric cults, and he is using a corrupted form of "Lathander" when he prays.

Cleric who is only luke warm on the gods, but believes so strongly in some of their portfolio they over look his griping at their behavior.

Divine soul sorcerer who grew up to be a baker and is called to adventure when zombies attack his village.

A butcher who had to defend an orphange he was delivering meat to, and found that he is skilled enough with his cleaver to be a fighter. 

Necromancer who excelled in their studies, but then just decided he didn't want to be evil like his master so poisoned his teacher and then turned over all materials to the Harpers. Now they are trying to figure out how to use their knowledge for good while their master's Thayan patron sends goons after them. 

those are just a few ideas i had.

Thanks for the Ideas!

Im about to run an Orphan Child Wizard who was raised by a cult to be a sacrifice in an evil ritual but the ritual was interrupted by a group of adventurers who wiped out the cult but my character was knocked out during the raid and was presumed dead and not rescued.

Unfortunately, from my character's perspective, the cult was an orphanage run by priests. He doesn't really have any reason to think otherwise. They have daily prayers (Chants to their evil deity) in a religious language he doesn't really know the origin of but has picked up over the years. (Abyssal) There were a bunch of kids there originally, but over time they got adopted (sacrificed), and when it was his turn to be adopted, he was brought to the meeting room (sacrificial chamber) to meet his new parents (be sacrificed), while he was waiting, a group of evil bandits (adventurers) attacked the cult, killed them all, looted the bodies, and went on their way. My character recovers, horrified by the attack, he takes the only thing the bandits didn't steal, the head priest's (head cultist) prayer book (evil ritual book), that was hidden. He used the prayer book to teach himself while trying to find help to track down and stop the bandits who wiped out his home and stopped him from getting adopted.

He's using the Sangromancy subclass from Grim Hollow. So Blood Magic. He's super naive and trusting. Very happy and always trying to see the positive side of things. I'm giving the origin from his perspective to other people at the table aside from the DM. He has no reason to think there's anything wrong or unsettling at all about his magic because that's the only magic he's ever really experienced from the monks/cultists. He's able to speak abyssal but doesn't know it is abyssal, just that it's some old language they use for "prayers".

My character in my current campaign is a borderline insane wild magic sorcerer. I wrote him as a way to incorporate him in to an already in-progress campaign that was using 2014 but the DM wanted chaos and was fine with me using a 2024 character. So he's a magical researcher of the Izzet League from Ravnica. He was running an experiment on a magical artifact (later revealed to be a 2024 Deck of Many Things). There was a sabotage during one of his experiments leading to an explosion and a tear was torn between realms. His memories are fragmented, he doesn't remember Ravnica very well but what flashes of knowledge has is usually wrong because it's based on versions of creatures from Ravnica. So like, the group encountered a Red Dragon, and he approached it in a friendly way not thinking it was evil because his memories of Red Dragons involve members of the Izzet League. The explosion that messed with his experiment also messed with his magic leading to the Wild Magic. And because he's from a different realm from the group, we used that as the explanation for why the spells he uses are slightly different from the same versions of the spells that the wizard in the group uses. We used that as an RP hook and explored some of the differences and started coordinating between my character and the wizard to take advantage of those differences (using the 2024 or the 2014 Counterspell when it was ideal, for example).

A previous campaign I played an Air Genasi Genie Patron Warlock. His Patron a Djinni Lord and is his great great great etc grandfather. He acts as a "wish contract enforcer" for his grandfather. His Grandfather grants wishes to people from time to time, in exchange for various things from them. Basically a "Djinni Lord grants an adventurer a Wish, but they have to go do a quest for him in exchange." My character's job being to hunt down the ones that gave up on or failed their quest. Heavy Drinker. Likes to Gamble. 

Another character I liked, we did a Curse of Strahd Campaign where I was a Fairy Artificer. Joined a group that had just finished the Death House portion so my character was introduced as someone who had already been living in Barovia for quite some time. Previously she had fled the Faewild for pulling a string of pranks on some higher tier Fae and is basically just not able to return there. After fleeing the Faewild she was taken in by Dwarves and learned from them. So her nature as an Artificer is a mix of Dwarven Forging Training mixed with innate Fairy Magic. She was, eventually abducted in to Strahd's Realm but wasn't able to do anything on her own about it so she settled down in Barovia. She ran a Blacksmith but was just overall done with the entire situation of the area. Super nihilistic. Knows all of Strahd's typical crap but Strahd likes to piss her off so he hasn't killed her yet, and since she's a Fae she cant be turned in to a vampire. I made her a heavy smoker, fought with a Musket, very quick with the trigger, and I made her speak like Doctor Girlfriend from Venture Bros.