Sybil
Human Noble Wild Sorc 1. 5'1" 90 lbs. Kind of an airhead, but always cheerful and pretty in an ethereal sort of way. Has a good heart and a protective, mothering instinct.
Str 5 Dex 7 Con 8 Int 9 Wis 12 Cha 15, Inspiring Leader feat, AC 8 (11 with Mage Armor). 5 HP, but +3 temp HP for everyone in the party per short rest after Sybil gives one of her famous pep talks.
If she makes it to 10th level, she'll be:
Human Noble Wild Sorc 3/Life Cleric 1/Lore Bard 6
Str 5 Dex 7 Con 8 Int 9 Wis 13 Cha 16, Inspiring Leader feat, AC 20, 39 HP + 13 temp HP for everyone in the party per short rest. Metamagic: Careful Spell, Extended Spell. Magical Secrets: Aura of Vitality, Conjure Animals. Skills: Stealth (Expertise), Perception (Expertise), Athletics, History, Arcana, Persuasion, Insight, Medicine.
Sybil's adventuring-time plate mail sure is noisy and she often prefers to ride a steed or something because frankly it's kind of exhausting for one little girl to carry all this metal, but if she needs to she can Longstrider herself to keep up.
Favorite spells/combos:
Extended Aura of Vitality for 240 HP of healing over the course of two minutes.
Careful Web for 3/4 of the party to hide in without any chance of getting caught themselves. (Will be 4/4 at Cha 18.)
Ditto Careful Stinking Cloud, but with the added opportunity for the players to throw nets without disadvantage (because heavy obscurement cancels out). Nets and Stinking Cloud combo well because a restrained enemy can't exit the cloud with his movement, and an enemy who can't act because he's choking can't get out of the net--so it winds up being much stronger than just a regular Stinking Cloud.
Plinking with Fire Bolt from long range.
Conjure Animals V in tough fights to summon a whole horde of disposable minions to keep the PCs safe.
Blur + Shield when she needs to become unhittable, plus Booming Blade for offense.
Bless, Hypnotic Pattern, and Enhance Ability as appropriate to the situation.
Sanctuary with her bonus action when under attack.
Sybil's favorite form of Cutting Words does not involve insults but rather glowing compliments at inappropriate times:
[bugbear swings at Randolph the Mighty]
Sybil: [squeee!] I love your hair, it's so glossy! Where did you get it done?!
[bugbear misses Randolph and stares momentarily at Sybil]