Trigron (Japanese: Migodora) is a genetically enhanced Ground/Steel type Pokémon created by Team Rocket. Its gene bases are Dugtrio and Aggron.

Trigron is surprisingly fast for its size and can create a whole network of tunnels in a matter of days. It is thought this creature was likely developed to enable the fast construction of large underground hideouts and eradicate large quantities of scrap metal.
 

Pokédex Entry

SUBJECT CODE T1-G0N
Utility

Specimen will only become dormant if all three of its brains are asleep at the same time. When awake it is constantly active and will burrow through anything. Sedate as appropriate and contain in a suitable unit.

References

Trigron appears in Episode 13 of "Ultimatum"

Evolution

n/a

Name Origin

English - Combination of 'Tri' (Three) and 'Aggron'
Pronounced 'tr-eye-gon'

Japanese - 'Mi' (Three) and 'Bossgodora'