Jyk is an enemy in Super Smash Bros. Brawl's The Subspace Emissary mode. It is a non-sentient spike ball that moves in a predetermined path. Depending on the environment, Jyks can take the appearence of Flame Jyks, Zap Jyks, or Hydro Jyks (which do electric damage). Because a Jyk cannot be killed, it is more like an obstacle than an enemy. It can also not be captured by a trophy stand. Instead you must clear boss battles with 20 characters to get the Jyk trophy.
Trophy Description
A six-spiked enemy. Attacking a Jyk will do no damage, as they can't be defeated. But you'd better believe that a Jyk will deal out damage to you if you get too close. This foe epitomizes player-hindering obstacles--it gets in your way... and it hurts. It definitely isn't thought fondly of by the characters in the game. It may have something to do with its SHARP SPIKES! Ouch.
- Super Smash Bros. Brawl, 2008