20% chance to encounter in day, 10% chance at night
If we follow up our Sentret encounter with Mareep we are stuck with a pure Electric type for our next encounter which hinders our options dramatically – the next available Electric type isn’t until Route 38, a whole four gyms later.
To bypass this, we can make use of the Onix trade in Violet City. If we trade Bellsprout for Onix we open up two more types, Rock and Ground. With this we get access to Geodude for our Route 46 encounter and can go from there. The only problem is post Falkner we have Union Cave which is rife with Sandshrew, this forces us to take our Ground type encounter and then we’re stuck until the next Ground type in Ice Path after the 7th gym!
As well as all of this, there’s a chance we get stuck with a Hoppip anyway – a valid option but one that I won’t be exploring as we have two Grass types already.
I think on the whole this route is very restrictive, so sadly we won’t be taking Mareep.