Sorry if it's been asked or ruled on, but couldn't find an official FAQ.

Warrior Poet has an action that does -1/-1.

Honored General just gives +1M to Lion characters.

Both of them say that the character has to be at conflict and it affects each participating character.

So question is, if I move a character into combat through "Charge" or other means, are they affected by the modifications?

I know if Warrior Poet hasn't performed her action yet, than its yes for her... I more mean after she has done it a new character is brought in, for regards to her.

https://fiveringsdb.com/card/warrior-poet

When Warrior Poet triggers her ability, she will only effect characters that are participating in the conflict at that time.

Honored General has a constant ability.
A constant ability becomes active as soon as its card enters play and remains active while the card is in play.
Some constant abilities continuously seek a specific condition (denoted by words such as "during," "if," or "while").
The effects of such abilities are active any time the specified condition is met.

A Lion character that is Charged into a conflict, after Warrior Poet has triggered, will get the +1Mil from Honored General, but not the penalty from the Poet.