Similar Pokemon

[Germaniac]

Plusle and Minun
Do You know more?

 

[The Girl Once named Tracie]

caterpie and weedle

silcoon and cascoon

Pidgy and Spearow

Dragonite and Salamance

Mew and Celebi

Moltres, Articuno, and Zapdos

There are probably a lot more, but that's all I can think of off hand

 

[Haza]

Charizard x Dragonite
Yanmega x Vibrava
Palkia x Groudon (Ony to me XD)
Jynx x Mr. Mime
Butterfree x Venomoth
Beedrill x Vespiquen
Pikachu x Pachirisu
Roserade x Shiftree
Lucario x Mewtwo
Manaphy x Celebi x Mew x Jirachi
Budew x Oddish
Seviper x Arbok
Squirtle x Torkoal x Turtwig

 

[RyanTheMan]

Magikarp and Feebas
Raikou and Entei

 

[bit.trip void]

Um.

Bulbasaur, Treeko, Turtwig, ...other one

All starters via type;

Pidgey, Hoothoot, Taillow, Starly

Evo's~~~

Ratata, Sentret, Zigzagoon, Biddof;

ETC MAN ETC

 

[Mew~]

Lugia, latios and latias!
Ive always thought they were linked some how...

 

[Serene Grace]

Most Pokemon of the same type look alike because of the typing and, mostly, the colours match. I do think Aipom and Mankey have a likeness though - as they both resemble monkeys.

 

[Ayselipera]

Turtwig x Bulbasaur
Cleffa x Igglybuff x Happiny x Togepi

 

[Elite Overlord LeSabre™]

Meowth x Skitty x Glameow
Evolved forms of above
Pidgey x Sparow x Taillow x Starly
Weedle x Caterpie x Wurmple
Slaking x Snorlax

 

[Haza]

Lugia, latios and latias!
Ive always thought they were linked some how...

I have always thought that too... the names to for some reason.