User blog comment:PrimeXam/very short rant/@comment-122.52.51.47-20160806074948/@comment-29349735-20160808071557

Fenrir seems to snowball faster than Alchemist does. With Alchemist, she usually doesn't become deadly until she procs a few times, whereas if Fenrir gets two procs he could wreck a team. You can also bring the full force of your DPS and focus down Alchemist ASAP, which is much harder to do for Fenrir.

There's also the matter that you have to kill the minions before even touching Fenrir, which makes a lot of newbie teams useless. As an example, I had a good chance of beating Summer Alchemist using my pieced together 5x Mika team, while trying that same team against Fenrir is pretty much like rolling a die and hoping it lands on a 1.

Fenrir is trivial with a team tailored for him (Herb Wing and/or a super turn skipper with unleashers makes him trivial), but he's much harder than alchemist for a lot of cobbled-together teams that newer players are forced to bring against FAWs.