A needlessly hard to train fish pokemon that only knows about three moves. Those moves are splashing about which does nothing, a simple tackle move, and last is flailing which only effectively works if the thing is already near dead.

That last thing people never get to see because they make sure it evolves before then. Which by the way, your tick can easily take it out anyway by then without evolving.

[Though it would be awesome to see a joltik take down a Gyarados.]