First off excellent choice in thumbnail for no particular reason. Secondly haven't gotten to the CQs yet and I would have been shocked if Melu didn't dumpster this since I remember Solo-ing Touta with Leonidas.
Since he doesn't have any taunts in his skillset, to make him die, I gave him "GUDAGUDA Poster Girl" one of the few CEs with a taunt effect. If you want a similar CE, I think you can redeem from the RP Shop the "CBC 2017 Portrait Exchange Shop" and get Outrage (the one with Cu Alter) that has the taunt effect, but last only for 1 turn