Fearow in depth
A demon with a drill in its face
The Japanese name, Onidoriru (オニドリル), combines 鬼 (oni, demon) with drill, leaving 鳥 (tori, bird) in the background. The English name does the same with another pun: fear plus sparrow, just as its pre-evolution combines spear with the same sparrow. Both languages point to the same idea: an ordinary bird turned into a piercing weapon, and the design backs it up with its bare vulture-like neck and the ragged feathers at its base.
The beak is the whole joke. Having its category be Beak Pokémon and its signature move be Drill Peck closes the loop on the Japanese name without needing to translate anything.
What arrived late
For years, this Pokémon's problem had a name and a type: Rock. With Normal and Flying in its kit and nothing else, any stone wall stopped both options at once, and the classic first-generation analyses say so without mincing words. Drill Run, a Ground-type move, changed that picture when it finally entered its movepool, and in Brilliant Diamond and Shining Pearl it already has it from level 1 as well as being able to relearn it at 45.
Sniper is the other late arrival: the Hidden Ability came with the fifth generation, in Black and White, and added an alternative plan to a Pokémon that until then only knew how to attack head-on. Neither change moved it up the competitive rankings, but together they turned a one-dimensional attacker into something with two different routes.
The bird that always gets another one put in front of it
Every region introduces its early Normal/Flying bird, and they all carry the same filler label associated with the first routes. Within that group, Kanto's occupies an awkward position: Pidgeot beats it in staying power and presence, Dodrio in raw power, and the birds from later generations arrived with abilities that actually make people nervous. What Fearow has to itself is 100 Speed, a round number that did matter in the lower tiers of the early generations, where it could keep pace with serious threats.
The compensation comes in a normal playthrough. Catching one early and carrying it to level 41 gives you a fast attacker with Drill Peck and Fly for getting around the map, and that solves a good part of Kanto without asking anything in return. Falling short against the Elite Four afterwards is another story.
It had its moment in the anime. The flock of Spearow that chases Ash in the first episode leaves behind a Fearow that returns seasons later, and beating it requires his Pidgeotto to evolve in the middle of the battle. It is the enemy from episode one getting its revenge, and probably the only time this Pokémon has been the most important thing on screen.