A searchable prefix on the names is currently the only way. Pogo has a bad search so it'll only return names that start with what was typed.
Edit: I use [letter]% for things like this because I don't want them to appear at the top, I just want them to be searchable. My name sort is reserved for top 12 attackers followed by all my good defenders. s% for hundo, n% for zero, p% for non-hundo powerup target at the moment.