It’s always an excellent idea to start off by asking the new trainer in question what their favorite pokémon are specifically and work from there. It’s possible that your daughter might already have a starter in mind, and it doesn’t hurt to indulge her if the starter in question is easy to obtain. She will, after all, be bonding with her starter under your supervision (for the most part), so even the rowdiest dark-types may be suitable starters, if she’s given enough time before the start of her journey.
The other consideration is, of course, where you live. Most dark-types are a bit difficult to obtain in certain regions (or at all), so your choices may be rather limited. For example, while sneasel is a perfectly viable starter in Johto, it’s extremely rare and difficult to obtain in Alola (and its ice typing and dislike of bright light mean it may not fare well in that region anyway), so I wouldn’t recommend even bothering to search for one, even if your daughter is rather keen on them.
With those two considerations in mind, I always like to recommend analogues to the traditional grass, fire, and water starters, as part of the reason why these types of pokémon are often given out as starters is because some combination of these stand the highest chance against the first gym of a circuit. With that in mind, houndour is actually a wonderful choice for a fire-type analogue, but quite honestly, it’s an excellent pokémon beyond that as well. Houndour are often loyal to their partners and incredibly intelligent to wit, and thus, they’re remarkably easy to train.
Beyond that, however, your daughter may need to have patience, as a number of excellent choices only become dark-types in their advanced stages of evolution. For example, litten and froakie are both traditional starters and thus ideal choices for beginning trainers, but the both of them are pure fire- and water-types (respectively) until evolution. Still, if you’re looking for both loyalty and either power or speed, you can ask for no better dark-types than incineroar and greninja.
Regarding partial grass-types, however, it’s a bit more of a challenge. Cacnea (which evolves into cacturne) is an excellent choice, of course, but cacturne may be a bit mischievous and difficult for a younger trainer to handle. On the other hand, the other grass-type option, nuzleaf and shiftry, are powerful, intelligent pokémon in their own right, but seedot (their base stage) is notoriously difficult to train due to its lack of powerful offensive moves at first.
Alternatively, if your daughter is less interested in the traditional trio and more interested in more unconventional choices, you may be interested in:
- Pawniard is quite possibly the best choice, in my own opinion. Its disposition is often easy to work with (especially as they will often take orders from anyone who establishes themselves as an authority figure), and it will grow into a rather powerful companion with all the resistances and defensive capabilities of its steel-typing. However, bisharp (despite the loyalty it inherits from its pawniard stage) are a bit of a gamble. Some evolve and retain some semblance of their pawniard personality; others become quite cold and violent (towards an opponent, not their trainer). If your daughter chooses pawniard, she should be careful as she raises it.
- Alolan meowth and Alolan rattata. Both are equally powerful and easy-to-train pokémon, which is why they’re often either starters for trainers beginning in Alola or otherwise among their first catches. However, outside of Alola, these pokémon may be difficult to obtain (as noted above), with meowth being easier to find than rattata. The same can also be said of purrloin, although replace “Alola” with “Unova” there. They are also even more fickle and mischievous than Alolan meowth, so your daughter will need to keep her guard up at all times until earning a purrloin starter’s trust and respect.
- Sneasel is actually a rather popular choice in Johto, due to its speed, stealth, and intelligence. However, it’s also a fickle pokémon (meaning your daughter must work hard to earn its respect at first), and as noted above, it doesn’t fare well in tropical climates with an abundance of bright, sunny days.
- Sableye tend to be a less popular choice, but they have a cult following of their own due to the ease in caring for them (simply give them a few rocks and some water, and they’ll be fine), the beauty of their jeweled skin, and their surprising stealth and power. However, they dislike bright sunlight even more than most other dark-types, so they’re also difficult to train without inverting one’s sleep cycle.
- Scraggy are highly popular in Unova for their personalities, but it’s extremely important for your daughter to know that because they’re partial fighting-types, their natural moves consist only of techniques designed for close, physical combat. She will need to keep a particularly close eye on the state of her pokémon during battle if she chooses one of these.
- Absol is an often sought-after pokémon for dark-type enthusiasts, and they’re exceptionally strong as starters as well. However, they’re also difficult to find, and in some cultures, they are quite literally omens of death and destruction.
- Both sandile and stunky are equally excellent choices with few drawbacks (even in terms of personality). However, naturally, your daughter will want to be aware of stunky’s defensive stench.
- If none of these interest her, eevee evolves into the dark-type umbreon. Just a thought.
Best of luck to your daughter, anonymous! May her journey be exciting!