Nope. With the exception of Shedinja, the lowest possible stat is 4.
I did this on Marriland's Stat Calculator: I tested a Happiny Lv1, Bold (- Attack) nature and 0 IVs and EVs. The resulting Attack stat was 4.
Then I tested a Shuckle Lv1, Speed-hindering nature (can't remember what it was. :P) and 0 IVs and EVs. Again, it was the value 4.
So yeah, apart from Shedinja 4 is the lowest natural value a Pokemon can have. The Pokemon that can achieve this stat:
- Happiny (Base Attack Stat and Base Defense Stat of 5)
- Chansey (Base Attack Stat and Base Defense Stat of 5)
- Munchlax (Base Speed Stat of 5)
- Shuckle (Base Speed Stat of 5)
As you can tell, a Pokemon needs a base stat of 5 to achieve this. :3
Hope I helped. :)
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