Ah, I think I gave the potion of potential and beard serum to Wulfric, stupidly enough (the beard serum was before I decided to make him a tank. And he was way tanky enough to not need the potion of potential, I just wanted to spread the stat items a bit since one could only be given to Fucko). I did get the sea song for him, and I never actually equip the stinker, but it's true that for TP alone, and with enough attack, the slight attack downgrade on it will be worth (or was it crit dmg downgrade with what I had equipped? Can't remember). I also did the dying 5 times later, but I didn't think of dying with Fucko in the party so he lost that stat point too >>. I think that 30 something stat points he's missing out on does bring him down quite a bit. Would be nice if those stat point were like in a cumulative bank in which you could see how many extra stat points you've gotten, and new party members would gain access to the same number of stat points. He's still a little underleveled for now, but I've already been using the magical leaf so he's getting near there. Sad that he can't join the Fire dungeon, even though it's in the very cave he was occupying before leaving the continent.
There is a glitch that allows you to take Fucko to the Western Island with you. Get on the ship and sail to the crossroad between Shiptown, Nick's Home and Pine Island (the red dot in the middle). Then use the mouse and click on the dock of Shiptown. The game will ask you if you wanna go to Shiptown, and if you pick "yes", you will spawn at the harbor as a tiny ship. However, pressing Enter will cause the group of four to leave the ship, and you can now walk around the Western Island as you wish. To fix this glitch, all you need to do is talk to Dolpho, who will then port you back to the ocean like nothing happened.
That way, you can use Fucko to farm on the Western Island as well. The glitch only works in the public version though, in the Patreon version it's already been fixed.