Astarion is easily one of Baldur's Gate 3's most popular companions. There are countless ways this High Elf vampire can benefit a team, and four different feats to choose from as you level Astarion.
Baldur's Gate 3 Feats Guide: Which Are Best for You?
While multiclass builds are an option, this guide will only discuss the best possible performance for using Astarion exclusively as a Rogue.
Unlike other BG3 classes, which only get three feats, Rogues get a new feat four times: at levels four, eight, 10, and 12. You can max out your main stat, Dexterity, relatively quickly, and depending on the gear you acquire along your journey, you may even be able to respec once or twice to play with different options.
Here are some basic feats you should give a Rogue Astarion: