While Cyclops is active, whenever one of your [Bolt] characters deals damage, increase that damage by one (no matter how many Cyclops dice you have fielded).
Is damage from a [Bolt] character's ability modified by this ability, or is this meant only for combat damage?
As an example, Quicksilver: Villainous (UCX 084) has the following ability:
When Quicksilver is fielded or knocked out, deal 2 damage to each X-Men character in play (including yours).
This does not state that Quicksilver (i.e., the [Bolt] character) is specifically doing this damage, as opposed to Quicksilver: Pietro Maximoff (UCX 019) whose card says
When fielded, Quicksilver deals 1 damage to one opposing character.
In this case it is explicit that this is the [Bolt] character dealing the damage.