Is rocky good?

kamikaze is actually really good, but only on normal types. it has that 50% bonus that inflicts epic damage.

as for thor a couple S2 people use him and hes pretty good, don't know his stats off the top of my head but hes fast and has high attack at least

Is it possible the behemoth's you have faced have been E class so they appear weak? I wonder if you breed to A and get rid of kamikaze how good it would be... Speed is important... Rocky always attacks last which is a significant weakness, also blocky has weak magic defense. If behemoth had less defense than Ricky but made up for it in more balanced magic defense and speed it could be more useful.

I don't know if anyone has stats of lvl 40 behemoth they could share with the grade... It's possible the lvl 22 you saw sucked because he only shines at final form? rank A stats would help if anyone has it... Probably wasn't worth the trouble when you can spend that time getting S Lupa instead.

that's most likely all true but ill still stick to not using either one lol. I never use rock types with any real regularity.