The starters in Uranium are different from the starters in the main series Pokémon games in that they each evolve only once. Additionally, each has 2 types rather than one, allowing for more strategy. The reason for this divergence is to augment the difficulty and uniqueness of the game.
The player's rival, Theo, also receives one of these starter Pokémon from Professor Bamb'o. However, unlike the official Pokémon games where the rival always receives the starter with a type advantage, Theo's starter always has a type disadvantage to the player's starter. If the player gets Orchynx, Theo gets Eletux; if they get Raptorch, he gets Orchynx; and if they get Eletux, he gets Raptorch.
Upon realizing that he has the weaker starter, Theo starts to cry and runs out of the lab, complaining about how it was unfair. However, Professor Bamb'o reassures the player that Theo is simply young and easily upset, and that they shouldn't judge him too harshly.