Nintendo didn’t only announce details for Miitomo and My Nintendo this week. Here’s Takashi Mochizuki, reporting for The Wall Street Journal:

Videogame giant on Tuesday posted a sharp drop in quarterly net profit, but it stoked the hopes of fans by promising that its second smartphone game would feature one of the company’s best-known characters.

And:

“The second game won’t be another communication app, and we plan to adopt one of our characters that fans are very familiar with,” Nintendo CEO Tatsumi Kimishima said.

Mario is the obvious choice (as is Pikachu, also given this year’s 20th anniversary of the Pokémon franchise), but I’ve long argued that WarioWare mini-games would be great candidates for multitouch gameplay and, possibly, In-App Purchases. Still, Nintendo has plenty of options to choose from.