Dugtrio

It digs in the middle of battle, hides underground and suddenly bursts out where no one expects it; the Pokédex warns that you never know where it will surface. Outside battle, its job is different. The three heads emerged from a single body and think alike, so they dig in coordination and without rest to depths of up to 100 km, cutting through the hardest ground known.

They get along well. They only bicker every now and then, and always over the same thing: deciding which one gets to eat first.

The 0.7 m and 33.3 kg listed in the record apply only to what appears above ground. It is common on farms—turning over the soil is useful to anyone who cultivates it—and yet no one has ever seen the part of its body that remains buried. The official category, Mole Pokémon, describes less than it hides: an animal whose heads, pink nose and little else are all anyone knows.

It completes Diglett's evolutionary line at level 26, and that is where it ends. There is no third stage, no Mega Evolution, and the only type it has is Ground, with no secondary type. The Alolan form is another story, and changes rather more than just the color.

120 Speed and 100 Attack out of a total of 425: two good figures and four that are not. Its 35 HP and 50 Defense are among the frailest stats the first generation produced, Special Attack is likewise stuck at 50, and only its 70 Special Defense provides much support. Any moderately serious hit knocks it out, including priority moves, which ignore that Speed completely.

What made it relevant was never its stats, but Arena Trap: while it is on the field, the opponent cannot flee. You choose who to remove and remove them, with no way to switch out except for Flying-types, Pokémon with Levitate, and anyone carrying the item that negates the lock. It went far enough that Smogon eventually banned the ability from Sun and Moon OU, with 72.4 % of votes in favor of the ban. Its other two abilities, Sand Veil and Sand Force, depend on a sandstorm being active and are worth much less.

Its movepool is short and straightforward. Earthquake arrives at level 48 and is all it needs against Fire, Electric, Poison, Rock and Steel; Stone Edge by TM exists specifically for anything that flies and comes out of Ground-type attacks unscathed; Foul Play punishes anyone trying to stop it from the special side. Swords Dance is tempting and almost always a luxury it cannot afford: it rarely survives the turn it takes to use it. Against a Skarmory, it has nothing—immune to the ground, immune to the trap, and able to hit back. In a normal playthrough its role is different and fairly comfortable: it outspeeds almost everything on the route and finishes off anything already weakened.

It belongs to a single Egg Group, Field, the most crowded of them all, with an even 50 % gender split. Its 20 incubation cycles amount to roughly 5355 steps, a wait that is average to fairly long.

It has no Egg Moves. Not one: everything it knows comes from leveling up or TMs, so breeding is only useful for locking in a nature and IVs, never for passing down anything exclusive. Anyone looking for variety will find it in the TM list, which includes things as unlike the creature as Charm, Curse and Sludge Bomb.

Its evolution is one of the simplest there is: Diglett reaches level 26 and becomes a trio. No item, no friendship, no time of day, no trade.

In the wild, its habitat is caves, and some specimens are holding Soft Sand. Its catch rate, 50, sits in the awkward range—very close to the 45 considered difficult—so it is a good idea to lower its HP and put it to sleep before wasting Poké Balls. It grows at an average rate and awards 2 Speed EVs when defeated.