my teams beat it on first go all you do is attack it pow pow pow and gtfo and you hear his growls (him charging his attack) and go back in. for now we'd need pots and what not (i go as far as buying the new combo elixer, or the older one, lets you run faster too away from his charged attack)

hes easy in the regular levels, but the boss level hes tougher, hence why i used the above method for it