Has your character ever had a beloved pet, a steed, or an NPC companion that, as your character leveled up, became too weak to take along on adventures? Your funny goblin friend or pet owlbear might have once been useful battle companions, but you can’t really bring them into the great wyrm’s den and expect them to survive. With regrets, you must bid them adieu. Or maybe one kobold survives your raid on its lair and vows revenge--over your adventuring career you meet them time and time again, growing in power as you do.
Pets and Sidekicks fixes that. In games like Dungeons & Dragons and Level Up: Advanced 5th Edition, which are predicated on the heroes becoming more powerful over time and facing ever-more powerful villains, your allies (and recurring foes!) should become more powerful too. In Pets and Sidekicks, you’ll find rules for monsters and NPCs that level up along with the characters.