I like their standing charge shots, for some reason they aren't too much weaker but they charge much faster and have this really awkward, annoying momentum
Similar to eyetracks, except they can't be canceled (or else they'll explode) and have a higher spam rate with the standings. They CAN be made to OHKO, but I seem to kill more consistently by spamming standing charge shots which 2hko, and inflict freezing or something else to make the second shot easier to hit with.
Some of them (Fireworks iirc) seem to be able to hit through reflect barrier if just the explosion gets to it, and not the shell. As well as eat up bumblebee as near corners, they'll warp right back into the blast.